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<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
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  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_ifrs-full_FairValueOfAcquiredReceivables_915ed67f-2f35-40c1-af1d-81bb4a782570_terseLabel_en-US" xlink:label="lab_ifrs-full_FairValueOfAcquiredReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of acquired receivables</link:label>
    <link:label id="lab_ifrs-full_FairValueOfAcquiredReceivables_label_en-US" xlink:label="lab_ifrs-full_FairValueOfAcquiredReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair value of acquired receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FairValueOfAcquiredReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FairValueOfAcquiredReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FairValueOfAcquiredReceivables" xlink:to="lab_ifrs-full_FairValueOfAcquiredReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_Prenetics2022PlanMember_d68aa26e-96c6-48a9-8283-8588051deb59_terseLabel_en-US" xlink:label="lab_pre_Prenetics2022PlanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prenetics 2022 Plan</link:label>
    <link:label id="lab_pre_Prenetics2022PlanMember_label_en-US" xlink:label="lab_pre_Prenetics2022PlanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prenetics 2022 Plan [Member]</link:label>
    <link:label id="lab_pre_Prenetics2022PlanMember_documentation_en-US" xlink:label="lab_pre_Prenetics2022PlanMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prenetics 2022 Plan</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_Prenetics2022PlanMember" xlink:href="pre-20251231.xsd#pre_Prenetics2022PlanMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_Prenetics2022PlanMember" xlink:to="lab_pre_Prenetics2022PlanMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems_91573a59-ad84-494e-8244-61ae7535c6ac_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:to="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_1dd1d8ba-a123-4b07-93f4-5fee052138ec_negatedLabel_en-US" xlink:label="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payment for purchase of property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_label_en-US" xlink:label="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase of property, plant and equipment, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_LeaseTerm_ff7ac089-8942-4fb9-a61a-606dae9702e6_verboseLabel_en-US" xlink:label="lab_pre_LeaseTerm" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Lease term</link:label>
    <link:label id="lab_pre_LeaseTerm_label_en-US" xlink:label="lab_pre_LeaseTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Term</link:label>
    <link:label id="lab_pre_LeaseTerm_documentation_en-US" xlink:label="lab_pre_LeaseTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LeaseTerm" xlink:href="pre-20251231.xsd#pre_LeaseTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_LeaseTerm" xlink:to="lab_pre_LeaseTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_WagesAndSalaries_d9763589-7630-4a5f-af31-266fd18726a6_verboseLabel_en-US" xlink:label="lab_ifrs-full_WagesAndSalaries" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Salaries, wages and other benefits</link:label>
    <link:label id="lab_ifrs-full_WagesAndSalaries_43bc2e19-c735-44f7-9a43-097e9f31112d_terseLabel_en-US" xlink:label="lab_ifrs-full_WagesAndSalaries" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salaries, wages and other benefits</link:label>
    <link:label id="lab_ifrs-full_WagesAndSalaries_label_en-US" xlink:label="lab_ifrs-full_WagesAndSalaries" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Wages and salaries</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WagesAndSalaries" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WagesAndSalaries"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_WagesAndSalaries" xlink:to="lab_ifrs-full_WagesAndSalaries" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests_66d6625c-170e-4812-bc1a-fdce185bc934_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests percentage</link:label>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of ownership interests held by non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests" xlink:to="lab_ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityFileNumber_618278af-c276-401a-aa58-552a49662703_terseLabel_en-US" xlink:label="lab_dei_EntityFileNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity File Number</link:label>
    <link:label id="lab_dei_EntityFileNumber_label_en-US" xlink:label="lab_dei_EntityFileNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity File Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFileNumber" xlink:to="lab_dei_EntityFileNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AdjustmentForGainOnWarrantExchange_019d033a-b71f-7d6f-9cec-5e6b51729660_negatedTerseLabel_en-US" xlink:label="lab_pre_AdjustmentForGainOnWarrantExchange" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Gain on warrant exchange</link:label>
    <link:label id="lab_pre_AdjustmentForGainOnWarrantExchange_019d85e1-ffcd-7087-b119-223b40bced35_negatedLabel_en-US" xlink:label="lab_pre_AdjustmentForGainOnWarrantExchange" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Warrants exchange</link:label>
    <link:label id="lab_pre_AdjustmentForGainOnWarrantExchange_label_en-US" xlink:label="lab_pre_AdjustmentForGainOnWarrantExchange" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustment For Gain On Warrant Exchange</link:label>
    <link:label id="lab_pre_AdjustmentForGainOnWarrantExchange_documentation_en-US" xlink:label="lab_pre_AdjustmentForGainOnWarrantExchange" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustment For Gain On Warrant Exchange</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentForGainOnWarrantExchange" xlink:href="pre-20251231.xsd#pre_AdjustmentForGainOnWarrantExchange"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AdjustmentForGainOnWarrantExchange" xlink:to="lab_pre_AdjustmentForGainOnWarrantExchange" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfBusinessCombinationsLineItems_3319d386-0519-4f22-a916-c49b7e872924_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfBusinessCombinationsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about business combination [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfBusinessCombinationsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfBusinessCombinationsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about business combination [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems" xlink:to="lab_ifrs-full_DisclosureOfBusinessCombinationsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_646d604e-632f-4328-b608-c6305cfb5cff_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of estimated useful lives of intangible assets</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_135fada2-85a3-4fe8-b9d4-4ace778ceec2_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of intangible assets</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ClassBCommonStockMember_29f9b442-603a-4637-802b-8984534f8133_terseLabel_en-US" xlink:label="lab_pre_ClassBCommonStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class B ordinary shares</link:label>
    <link:label id="lab_pre_ClassBCommonStockMember_label_en-US" xlink:label="lab_pre_ClassBCommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class B Common Stock [Member]</link:label>
    <link:label id="lab_pre_ClassBCommonStockMember_documentation_en-US" xlink:label="lab_pre_ClassBCommonStockMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class B Common Stock</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ClassBCommonStockMember" xlink:href="pre-20251231.xsd#pre_ClassBCommonStockMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ClassBCommonStockMember" xlink:to="lab_pre_ClassBCommonStockMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyDomain_19df2bbb-d500-4214-b8a6-fab19efbccb1_terseLabel_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy [domain]</link:label>
    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyDomain_label_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:to="lab_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent_e4e37dcc-8279-413c-b555-9b9fa94e2b64_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comprehensive income (loss) from continuing operations, attributable to owners of parent</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income from continuing operations, attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent" xlink:to="lab_ifrs-full_ComprehensiveIncomeFromContinuingOperationsAttributableToOwnersOfParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EliminationOfIntersegmentAmountsMember_feb6cf8a-4f7e-41e6-a0ff-514ec44862fd_terseLabel_en-US" xlink:label="lab_ifrs-full_EliminationOfIntersegmentAmountsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Elimination of intersegment amounts</link:label>
    <link:label id="lab_ifrs-full_EliminationOfIntersegmentAmountsMember_label_en-US" xlink:label="lab_ifrs-full_EliminationOfIntersegmentAmountsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Elimination of intersegment amounts [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EliminationOfIntersegmentAmountsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EliminationOfIntersegmentAmountsMember"/>
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    <link:label id="lab_ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities_4b479ab4-5735-40c5-9078-35226e7c478d_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses and other current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities_b42a45e9-59c5-424a-b207-641e7029cdd8_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses and other current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentAccruedExpensesAndOtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current accrued expenses and other current liabilities</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperations_f56bd0b4-4767-4107-8f86-b234b16f26a5_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Cash used in operating activities</link:label>
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    <link:label id="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_1bce892f-8d09-4765-a244-656fc5298490_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Others</link:label>
    <link:label id="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_label_en-US" xlink:label="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other tax effects for reconciliation between accounting profit and tax expense (income)</link:label>
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    <link:label id="lab_pre_RevenueFromFundingSupportOfEmployeeSupportScheme_060b46fa-3c13-4c23-a34f-ab1c9e88d084_verboseLabel_en-US" xlink:label="lab_pre_RevenueFromFundingSupportOfEmployeeSupportScheme" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Revenue from funding support of employee support scheme</link:label>
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    <link:label id="lab_pre_Doubtful1Member_baa3ced7-d970-441e-b666-34b29ab36047_terseLabel_en-US" xlink:label="lab_pre_Doubtful1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Doubtful</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory_79a5aa15-245d-499b-a736-94da9ab070dd_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of net book value of right-of-use assets</link:label>
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    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_b4d32ab0-a45f-4a1c-9ef5-f195a0077f7a_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Exercised (in shares)</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfInterestsInAssociatesExplanatory_d18b2e34-7404-4a25-9548-bacb22253958_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInterestsInAssociatesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of interests in equity accounted investees</link:label>
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    <link:label id="lab_pre_Expenses_06d56aab-ab09-49b8-9701-fb6190e65a92_negatedTerseLabel_en-US" xlink:label="lab_pre_Expenses" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Expenses</link:label>
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    <link:label id="lab_pre_OtherLiabilities1Member_823af9a7-66d3-4be7-9b3a-e03324b2d176_terseLabel_en-US" xlink:label="lab_pre_OtherLiabilities1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_OtherLiabilities1Member" xlink:href="pre-20251231.xsd#pre_OtherLiabilities1Member"/>
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    <link:label id="lab_ifrs-full_TradeAndOtherPayablesToRelatedParties_0135cfcc-fc60-4d45-b8b5-25885a9e1204_negatedLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherPayablesToRelatedParties" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amount due to a related company</link:label>
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    <link:label id="lab_pre_ACTGenomicsMember_b7c5390a-00d2-4f7f-91f5-5a72cf5f5e61_terseLabel_en-US" xlink:label="lab_pre_ACTGenomicsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ACT genomics</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_ACTGenomicsMember" xlink:href="pre-20251231.xsd#pre_ACTGenomicsMember"/>
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    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_b81d5890-5ad8-4d05-a25a-72254b7b98f0_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [line items]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent_a0772d2c-7061-4cdb-a531-d39d13e467d4_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income/(expense) attributable to equity shareholder of the parent Company</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income, attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent" xlink:to="lab_ifrs-full_OtherComprehensiveIncomeAttributableToOwnersOfParent" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_PreneticsLimitedMember_77c96e92-5331-409a-8498-2c6e89929543_terseLabel_en-US" xlink:label="lab_pre_PreneticsLimitedMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prenetics Limited</link:label>
    <link:label id="lab_pre_PreneticsLimitedMember_label_en-US" xlink:label="lab_pre_PreneticsLimitedMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prenetics Limited [Member]</link:label>
    <link:label id="lab_pre_PreneticsLimitedMember_documentation_en-US" xlink:label="lab_pre_PreneticsLimitedMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prenetics Limited</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PreneticsLimitedMember" xlink:href="pre-20251231.xsd#pre_PreneticsLimitedMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_PreneticsLimitedMember" xlink:to="lab_pre_PreneticsLimitedMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_OtherCurrentLiabilities1_89b614e6-1992-4e07-9bc1-2277a20cf8ec_terseLabel_en-US" xlink:label="lab_pre_OtherCurrentLiabilities1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_pre_OtherCurrentLiabilities1_label_en-US" xlink:label="lab_pre_OtherCurrentLiabilities1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Current Liabilities1</link:label>
    <link:label id="lab_pre_OtherCurrentLiabilities1_documentation_en-US" xlink:label="lab_pre_OtherCurrentLiabilities1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Current Liabilities1</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OtherCurrentLiabilities1" xlink:href="pre-20251231.xsd#pre_OtherCurrentLiabilities1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_OtherCurrentLiabilities1" xlink:to="lab_pre_OtherCurrentLiabilities1" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract_d596d526-2005-48c0-b8ac-d7d78bc3c7d2_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total comprehensive expense attributable to:</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income attributable to [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:to="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AuditorInformationTable_23b39b62-5bb4-4a82-9834-370f58cf106e_terseLabel_en-US" xlink:label="lab_pre_AuditorInformationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Auditor Information [Table]</link:label>
    <link:label id="lab_pre_AuditorInformationTable_label_en-US" xlink:label="lab_pre_AuditorInformationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Information [Table]</link:label>
    <link:label id="lab_pre_AuditorInformationTable_documentation_en-US" xlink:label="lab_pre_AuditorInformationTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Auditor Information</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AuditorInformationTable" xlink:href="pre-20251231.xsd#pre_AuditorInformationTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AuditorInformationTable" xlink:to="lab_pre_AuditorInformationTable" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits_c53dfa1c-ce87-4d8c-b991-76e91b4fa3f6_terseLabel_en-US" xlink:label="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of warrants or rights issued during the period units (in shares)</link:label>
    <link:label id="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits_label_en-US" xlink:label="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class Of Warrants Or Rights Issued During The Period Units</link:label>
    <link:label id="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits_documentation_en-US" xlink:label="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class Of Warrants Or Rights Issued During The Period Units</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits" xlink:href="pre-20251231.xsd#pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits" xlink:to="lab_pre_ClassOfWarrantsOrRightsIssuedDuringThePeriodUnits" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations_cf308ba6-f106-44eb-bb0e-5b2a52a368bc_terseLabel_en-US" xlink:label="lab_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic loss per share from continuing operations (USD per share)</link:label>
    <link:label id="lab_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations_label_en-US" xlink:label="lab_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basic earnings (loss) per share from continuing operations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BasicEarningsLossPerShareFromContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:to="lab_ifrs-full_BasicEarningsLossPerShareFromContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1_210ce30d-8ef0-4a63-822c-b0bc364d4b9a_terseLabel_en-US" xlink:label="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average remaining contractual life (in years)</link:label>
    <link:label id="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1_label_en-US" xlink:label="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Outstanding, Weighted Average Remaining Contractual Terms1</link:label>
    <link:label id="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1_documentation_en-US" xlink:label="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Outstanding, Weighted Average Remaining Contractual Terms1</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1" xlink:href="pre-20251231.xsd#pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1" xlink:to="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms1" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueFromGovernmentGrants_f4d4d82f-a025-44ca-8388-3e101cce2e86_verboseLabel_en-US" xlink:label="lab_ifrs-full_RevenueFromGovernmentGrants" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Government subsidies (notes)</link:label>
    <link:label id="lab_ifrs-full_RevenueFromGovernmentGrants_label_en-US" xlink:label="lab_ifrs-full_RevenueFromGovernmentGrants" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income from government grants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromGovernmentGrants" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromGovernmentGrants"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueFromGovernmentGrants" xlink:to="lab_ifrs-full_RevenueFromGovernmentGrants" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate_37445763-210b-4623-a8de-6694847d26f8_verboseLabel_en-US" xlink:label="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Trade receivables (including loss allowance $80)</link:label>
    <link:label id="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate_label_en-US" xlink:label="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade Receivables Recognised As Of Acquisition Date</link:label>
    <link:label id="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate_documentation_en-US" xlink:label="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade Receivables Recognised As Of Acquisition Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_TradeReceivablesRecognisedAsOfAcquisitionDate" xlink:href="pre-20251231.xsd#pre_TradeReceivablesRecognisedAsOfAcquisitionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_TradeReceivablesRecognisedAsOfAcquisitionDate" xlink:to="lab_pre_TradeReceivablesRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DeferredExpensesCurrentAbstract_3a80abf4-573e-46ae-babc-ea779f104389_terseLabel_en-US" xlink:label="lab_pre_DeferredExpensesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current</link:label>
    <link:label id="lab_pre_DeferredExpensesCurrentAbstract_label_en-US" xlink:label="lab_pre_DeferredExpensesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Expenses Current [Abstract]</link:label>
    <link:label id="lab_pre_DeferredExpensesCurrentAbstract_documentation_en-US" xlink:label="lab_pre_DeferredExpensesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred Expenses Current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DeferredExpensesCurrentAbstract" xlink:href="pre-20251231.xsd#pre_DeferredExpensesCurrentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DeferredExpensesCurrentAbstract" xlink:to="lab_pre_DeferredExpensesCurrentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisposalOfASubsidiaryCashReceived_019c7541-30fa-7c3f-86f6-298f5c28017b_terseLabel_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryCashReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash consideration</link:label>
    <link:label id="lab_pre_DisposalOfASubsidiaryCashReceived_label_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryCashReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Of A subsidiary, Cash Received</link:label>
    <link:label id="lab_pre_DisposalOfASubsidiaryCashReceived_documentation_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryCashReceived" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disposal Of A subsidiary, Cash Received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisposalOfASubsidiaryCashReceived" xlink:href="pre-20251231.xsd#pre_DisposalOfASubsidiaryCashReceived"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisposalOfASubsidiaryCashReceived" xlink:to="lab_pre_DisposalOfASubsidiaryCashReceived" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare_1dccb5a4-8069-4f9c-8aa1-3278b33aabc3_verboseLabel_en-US" xlink:label="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Closing price per ordinary share less subscription price per (in USD per share)</link:label>
    <link:label id="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare_label_en-US" xlink:label="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Closing Price Per Ordinary Share Less Subscription Price Per Ordinary Share</link:label>
    <link:label id="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare_documentation_en-US" xlink:label="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Closing Price Per Ordinary Share Less Subscription Price Per Ordinary Share</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare" xlink:href="pre-20251231.xsd#pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare" xlink:to="lab_pre_ClosingPricePerOrdinaryShareLessSubscriptionPricePerOrdinaryShare" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasTable_fdf7f278-879c-41ae-97a9-864f11d71ae7_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:to="lab_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_InventoryAsOfDisposalDate_019c7519-f775-7d9c-83c7-8d2b8198c3ef_terseLabel_en-US" xlink:label="lab_pre_InventoryAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_pre_InventoryAsOfDisposalDate_label_en-US" xlink:label="lab_pre_InventoryAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory as of Disposal Date</link:label>
    <link:label id="lab_pre_InventoryAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_InventoryAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inventory as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_InventoryAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_InventoryAsOfDisposalDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_InventoryAsOfDisposalDate" xlink:to="lab_pre_InventoryAsOfDisposalDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable_e594f956-3313-4ddb-9cd3-86671e561b7c_verboseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">(Increase)/decrease in trade receivables</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for decrease (increase) in trade accounts receivable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:to="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:type="arc" order="1"/>
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    <link:label id="lab_ifrs-full_DividendsPaidToNoncontrollingInterests_a2678240-1d98-454c-9c87-7e6d74a88b9b_terseLabel_en-US" xlink:label="lab_ifrs-full_DividendsPaidToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends paid to non-controlling interests</link:label>
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    <link:label id="lab_pre_WarrantExchangeNumberOfClassAAndBWarrantsInForOneClassCWarrant_019d034e-3d87-7a94-96ce-caa6b4845140_terseLabel_en-US" xlink:label="lab_pre_WarrantExchangeNumberOfClassAAndBWarrantsInForOneClassCWarrant" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of warrants in warrant exchange (in shares)</link:label>
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    <link:label id="lab_pre_WarrantExchangeNumberOfClassAAndBWarrantsInForOneClassCWarrant_documentation_en-US" xlink:label="lab_pre_WarrantExchangeNumberOfClassAAndBWarrantsInForOneClassCWarrant" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Warrant Exchange, Number Of Class A and B Warrants In For One Class C Warrant</link:label>
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    <link:label id="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_3fddbece-6d22-4d45-827e-2519b93b5fe1_terseLabel_en-US" xlink:label="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term deposits</link:label>
    <link:label id="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents_label_en-US" xlink:label="lab_ifrs-full_ShorttermDepositsNotClassifiedAsCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term deposits, not classified as cash equivalents</link:label>
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    <link:label id="lab_dei_DocumentFiscalPeriodFocus_445a2531-4a4f-4cc7-b441-ff48f09e5f83_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
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    <link:label id="lab_ifrs-full_BalancesWithBanks_d3f83065-9f21-423d-972a-354c6d771ffd_terseLabel_en-US" xlink:label="lab_ifrs-full_BalancesWithBanks" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bank balances</link:label>
    <link:label id="lab_ifrs-full_BalancesWithBanks_label_en-US" xlink:label="lab_ifrs-full_BalancesWithBanks" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Balances with banks</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BalancesWithBanks" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BalancesWithBanks"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BalancesWithBanks" xlink:to="lab_ifrs-full_BalancesWithBanks" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RelatedPartiesMember_019d9876-1be1-7f9a-b764-d5fcd9931f51_terseLabel_en-US" xlink:label="lab_ifrs-full_RelatedPartiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total for all related parties</link:label>
    <link:label id="lab_ifrs-full_RelatedPartiesMember_label_en-US" xlink:label="lab_ifrs-full_RelatedPartiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total for all related parties [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RelatedPartiesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RelatedPartiesMember"/>
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    <link:label id="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate_c309449c-18d4-4c26-9498-f671cb53081a_terseLabel_en-US" xlink:label="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other non-current assets</link:label>
    <link:label id="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate_label_en-US" xlink:label="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Non Current Assets Recognised As Of Acquisition Date</link:label>
    <link:label id="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate_documentation_en-US" xlink:label="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Non Current Assets Recognised As Of Acquisition Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" xlink:href="pre-20251231.xsd#pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" xlink:to="lab_pre_OtherNonCurrentAssetsRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Assets_535df8a4-612c-4ba9-99d9-cd57ff10b58d_totalLabel_en-US" xlink:label="lab_ifrs-full_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_ifrs-full_Assets_label_en-US" xlink:label="lab_ifrs-full_Assets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Assets" xlink:to="lab_ifrs-full_Assets" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ExpectedVolatilityMeasurementInputMember_e1aee229-217c-45e3-9b71-c779740b354e_terseLabel_en-US" xlink:label="lab_pre_ExpectedVolatilityMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected volatility</link:label>
    <link:label id="lab_pre_ExpectedVolatilityMeasurementInputMember_label_en-US" xlink:label="lab_pre_ExpectedVolatilityMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Volatility, Measurement Input [Member]</link:label>
    <link:label id="lab_pre_ExpectedVolatilityMeasurementInputMember_documentation_en-US" xlink:label="lab_pre_ExpectedVolatilityMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Volatility, Measurement Input</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ExpectedVolatilityMeasurementInputMember" xlink:href="pre-20251231.xsd#pre_ExpectedVolatilityMeasurementInputMember"/>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory_011f7154-fd23-4fe9-becb-63941cdb4ea7_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taxation</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for income tax [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory"/>
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    <link:label id="lab_pre_CancerGeneticTestingServicesWithinTheDiagnosticsSegmentMember_4458f844-13e8-4c4b-b2fd-8ed38abf9fb2_terseLabel_en-US" xlink:label="lab_pre_CancerGeneticTestingServicesWithinTheDiagnosticsSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cancer genetic testing services within the diagnostics segment</link:label>
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    <link:label id="lab_pre_CancerGeneticTestingServicesWithinTheDiagnosticsSegmentMember_documentation_en-US" xlink:label="lab_pre_CancerGeneticTestingServicesWithinTheDiagnosticsSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cancer Genetic Testing Services Within The Diagnostics Segment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_CancerGeneticTestingServicesWithinTheDiagnosticsSegmentMember" xlink:href="pre-20251231.xsd#pre_CancerGeneticTestingServicesWithinTheDiagnosticsSegmentMember"/>
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    <link:label id="lab_pre_ResearchAndDevelopmentExpense1Member_0e06276e-6d04-42e8-9704-bd6ea1bf2404_terseLabel_en-US" xlink:label="lab_pre_ResearchAndDevelopmentExpense1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Research and development expenses</link:label>
    <link:label id="lab_pre_ResearchAndDevelopmentExpense1Member_label_en-US" xlink:label="lab_pre_ResearchAndDevelopmentExpense1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research And Development Expense1 [Member]</link:label>
    <link:label id="lab_pre_ResearchAndDevelopmentExpense1Member_documentation_en-US" xlink:label="lab_pre_ResearchAndDevelopmentExpense1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Research And Development Expense1</link:label>
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    <link:label id="lab_ifrs-full_CostOfSalesMember_42e21641-d464-4265-a890-189f04113316_terseLabel_en-US" xlink:label="lab_ifrs-full_CostOfSalesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Direct costs</link:label>
    <link:label id="lab_ifrs-full_CostOfSalesMember_label_en-US" xlink:label="lab_ifrs-full_CostOfSalesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of sales [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CostOfSalesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CostOfSalesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CostOfSalesMember" xlink:to="lab_ifrs-full_CostOfSalesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SignificantInvestmentsInAssociatesDomain_b5dd11a9-48e1-43ac-b743-9b89fb42e637_terseLabel_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Associates [domain]</link:label>
    <link:label id="lab_ifrs-full_SignificantInvestmentsInAssociatesDomain_label_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Associates [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:to="lab_ifrs-full_SignificantInvestmentsInAssociatesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_72e8d765-7066-4cf0-a963-f3f12a450576_periodEndLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding at the end of the year (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_4d0580e6-fc2e-4192-9f5a-a4be8b88dc60_periodStartLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding at the beginning of the year (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_1f791aa9-bb1d-4a88-946f-b143bccc1f02_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted share units granted (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_label_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of other equity instruments outstanding in share-based payment arrangement</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:to="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory_a83e4e46-0ca8-402d-bdca-c0e35c818cde_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business combinations</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for business combinations [text block]</link:label>
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    <link:label id="lab_ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods_019d4ced-cd24-7e5f-af17-d7ed77d32ea0_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Under (Over) provisions related to prior years</link:label>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory_0979a6dc-92c4-405c-9ddf-cf51bf0eb6ee_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for goodwill [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory"/>
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    <link:label id="lab_dei_TradingSymbol_5fbebd1a-445a-475c-9924-699d40e7998e_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
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    <link:label id="lab_pre_ContractLiabilitiesAsOfDisposalDate_019c758b-70d5-7378-add7-bd05db7a0bb9_negatedTerseLabel_en-US" xlink:label="lab_pre_ContractLiabilitiesAsOfDisposalDate" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Contract liabilities</link:label>
    <link:label id="lab_pre_ContractLiabilitiesAsOfDisposalDate_label_en-US" xlink:label="lab_pre_ContractLiabilitiesAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract Liabilities as of Disposal Date</link:label>
    <link:label id="lab_pre_ContractLiabilitiesAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_ContractLiabilitiesAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contract Liabilities as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ContractLiabilitiesAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_ContractLiabilitiesAsOfDisposalDate"/>
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    <link:label id="lab_pre_DisclosureOfWarrantyLiabilitiesLineItems_8c334aeb-793a-4325-a18b-39e50c0d7fe0_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfWarrantyLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Warranty Liabilities [Line Items]</link:label>
    <link:label id="lab_pre_DisclosureOfWarrantyLiabilitiesLineItems_label_en-US" xlink:label="lab_pre_DisclosureOfWarrantyLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Warranty Liabilities [Line Items]</link:label>
    <link:label id="lab_pre_DisclosureOfWarrantyLiabilitiesLineItems_documentation_en-US" xlink:label="lab_pre_DisclosureOfWarrantyLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Warranty Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfWarrantyLiabilitiesLineItems" xlink:href="pre-20251231.xsd#pre_DisclosureOfWarrantyLiabilitiesLineItems"/>
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    <link:label id="lab_ifrs-full_DisclosureOfBusinessCombinationsAbstract_868925f6-fed9-4944-b139-ec5cf14c6e8a_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfBusinessCombinationsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about business combination [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfBusinessCombinationsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfBusinessCombinationsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about business combination [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsAbstract"/>
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    <link:label id="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss_889ff3fc-0150-4529-b4f9-deeeb4a49685_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial assets at fair value through profit or loss - non-current</link:label>
    <link:label id="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss_label_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial assets at fair value through profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss"/>
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    <link:label id="lab_pre_AdministrativeAndOtherOperatingExpenses_documentation_en-US" xlink:label="lab_pre_AdministrativeAndOtherOperatingExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Administrative And Other Operating Expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdministrativeAndOtherOperatingExpenses" xlink:href="pre-20251231.xsd#pre_AdministrativeAndOtherOperatingExpenses"/>
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    <link:label id="lab_dei_EntityAddressCityOrTown_9eb40e37-8a42-4a1e-997b-b4a909c243c5_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:label id="lab_dei_EntityAddressCityOrTown_label_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
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    <link:label id="lab_ifrs-full_DisclosureOfBorrowingsExplanatory_6eef0ab8-eb62-4bf8-b742-da1b55adc3fc_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciliation of movements of liabilities to cash flows arising from financing activities</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfBorrowingsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of borrowings [text block]</link:label>
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    <link:label id="lab_ifrs-full_IssuedCapitalMember_e5e2a453-3c2f-40f5-ad7e-176e1838fea1_terseLabel_en-US" xlink:label="lab_ifrs-full_IssuedCapitalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share capital</link:label>
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    <link:label id="lab_ifrs-full_OtherNoncurrentLiabilities_9ba08f54-4e23-438a-b26d-1729ffc8069f_verboseLabel_en-US" xlink:label="lab_ifrs-full_OtherNoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other non-current liabilities</link:label>
    <link:label id="lab_ifrs-full_OtherNoncurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_OtherNoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other non-current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentLiabilities"/>
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    <link:label id="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_6cc1b3b9-b7e1-4a46-a9e1-232d309365c4_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of key management personnel compensation</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities_b13938ec-2086-4afb-a9e5-cee8b5c29182_totalLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total changes from financing cash flows</link:label>
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    <link:label id="lab_dei_EntityEmergingGrowthCompany_cd9e6cd2-81fd-4fec-9e62-832cf708c865_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
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    <link:label id="lab_pre_TaxEffectOverUnderProvisionInRespectOfPriorYears_a29c0435-ff34-4068-84de-1050ca13542f_negatedTerseLabel_en-US" xlink:label="lab_pre_TaxEffectOverUnderProvisionInRespectOfPriorYears" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Under/(over) provision in respect of prior years</link:label>
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    <link:label id="lab_ifrs-full_PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities_f9fa3f39-813c-4ccf-8669-2e62ba312a73_negatedLabel_en-US" xlink:label="lab_ifrs-full_PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payment for purchase of financial assets at fair value through profit or loss</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory_d02309f0-f453-4c0b-bd6d-edeea44cde28_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General Information</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillLineItems"/>
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    <link:label id="lab_pre_ShortTermDepositsWeightedAverageInterestRatePointInTime_b1fa8cfc-83b6-44cc-a100-21937b05aa75_terseLabel_en-US" xlink:label="lab_pre_ShortTermDepositsWeightedAverageInterestRatePointInTime" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short term deposits weighted average interest rate point in time</link:label>
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    <link:label id="lab_pre_ShortTermDepositsWeightedAverageInterestRatePointInTime_documentation_en-US" xlink:label="lab_pre_ShortTermDepositsWeightedAverageInterestRatePointInTime" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Short Term Deposits Weighted Average Interest Rate Point In Time</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ShortTermDepositsWeightedAverageInterestRatePointInTime" xlink:href="pre-20251231.xsd#pre_ShortTermDepositsWeightedAverageInterestRatePointInTime"/>
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    <link:label id="lab_pre_LiabilitiesIncurredFirstPortion_documentation_en-US" xlink:label="lab_pre_LiabilitiesIncurredFirstPortion" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liabilities Incurred First Portion</link:label>
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    <link:label id="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_4055d345-d557-443e-8468-77fdf2ce61fc_terseLabel_en-US" xlink:label="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax at average income tax rate (Note)</link:label>
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    <link:label id="lab_pre_AdjustmentForGainsLossesRecognisedWhenControlOfSubsidiaryIsLost_019ce2f7-d02d-7708-b313-3e0876fb0e0f_negatedTerseLabel_en-US" xlink:label="lab_pre_AdjustmentForGainsLossesRecognisedWhenControlOfSubsidiaryIsLost" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Gain on disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock_17e64e31-5ecf-4d59-8516-f4dcce1b10a1_terseLabel_en-US" xlink:label="lab_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of carrying amounts and fair values of financial assets and financial liabilities</link:label>
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    <link:label id="lab_pre_NumberOfCustomersInGroup_902c9865-83fd-42c6-871b-4b8718fd37fc_terseLabel_en-US" xlink:label="lab_pre_NumberOfCustomersInGroup" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of largest customers</link:label>
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    <link:label id="lab_pre_NumberOfCustomersInGroup_documentation_en-US" xlink:label="lab_pre_NumberOfCustomersInGroup" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Customers In Group</link:label>
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    <link:label id="lab_ifrs-full_TypesOfAntidilutiveInstrumentsAxis_c29ba081-624d-4004-bb42-ac9f787da955_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfAntidilutiveInstrumentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of antidilutive instruments [axis]</link:label>
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    <link:label id="lab_ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019_0104d12d-4df5-41d1-b402-99a32d70f337_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value at measurement date (in USD per share)</link:label>
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    <link:label id="lab_ifrs-full_ExplanationOfSignificantChangesInContractAssetsAndContractLiabilitiesExplanatory_9ba90e58-c9c7-4df2-b0ba-2af5882ee612_verboseLabel_en-US" xlink:label="lab_ifrs-full_ExplanationOfSignificantChangesInContractAssetsAndContractLiabilitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of contract liabilities</link:label>
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    <link:label id="lab_dei_EntityAddressPostalZipCode_55b69733-ba9a-4fc1-a758-ac64f03d60ab_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
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    <link:label id="lab_dei_EntityAddressCountry_9921373d-4f1d-4545-93af-3c5f37198a67_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Country</link:label>
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    <link:label id="lab_pre_IndefinitePeriodMember_0833b545-217a-44ae-9466-fb6b4f01cfdc_terseLabel_en-US" xlink:label="lab_pre_IndefinitePeriodMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Do not expire under the relevant tax legislation</link:label>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory_e9832703-4bee-455e-90ea-8780676c0f94_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_6bada536-f21f-4612-b67c-6fe1f980f87e_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment loss of goodwill</link:label>
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    <link:label id="lab_dei_DocumentAnnualReport_f09c6ebf-9f37-41d9-a0eb-cd65b4260c0c_terseLabel_en-US" xlink:label="lab_dei_DocumentAnnualReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Annual Report</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable_de1eb3ef-0aea-447f-b5ba-a84d69f9537c_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about financial instruments [table]</link:label>
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    <link:label id="lab_ifrs-full_GeographicalAreasDomain_162be37b-c4e7-4331-9d7d-5ad030aad413_terseLabel_en-US" xlink:label="lab_ifrs-full_GeographicalAreasDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical areas [domain]</link:label>
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    <link:label id="lab_pre_LackOfMarketabilityMeasurementInputMember_df690349-05c2-4f11-a698-76ca5044c42f_terseLabel_en-US" xlink:label="lab_pre_LackOfMarketabilityMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lack of marketability, measurement input</link:label>
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    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivables_1c8a433e-2a6d-41aa-a59f-2a87551ca50d_totalLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Current</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory_46505174-e405-43a7-b9c2-4ca11860c770_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other non-current assets</link:label>
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    <link:label id="lab_dei_EntityInteractiveDataCurrent_aeaf2013-ef6c-4a60-8dfa-eb0cbada1e09_terseLabel_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
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    <link:label id="lab_pre_StockExchangeDomain_fe96692d-35be-4b21-a561-b0285204edfe_terseLabel_en-US" xlink:label="lab_pre_StockExchangeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Exchange [Domain]</link:label>
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    <link:label id="lab_pre_ClassAOrdinarySharesAfterReverseStockSplitMember_88fda14a-c842-4a5d-b5d7-2da220e39275_terseLabel_en-US" xlink:label="lab_pre_ClassAOrdinarySharesAfterReverseStockSplitMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class A ordinary shares after reverse stock split</link:label>
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    <link:label id="lab_pre_ScheduleOfCashAndCashEquivalents1TableTextBlock_0aaf1423-f58e-4f70-990d-0244ff4c0993_terseLabel_en-US" xlink:label="lab_pre_ScheduleOfCashAndCashEquivalents1TableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of cash and cash equivalents</link:label>
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    <link:label id="lab_pre_DepreciationChargeAbstract_713caef2-cf54-41e0-a02b-fcb0e7b3380a_terseLabel_en-US" xlink:label="lab_pre_DepreciationChargeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation of</link:label>
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    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyAxis_9f23b551-05f0-4a63-b829-72a3717eb661_terseLabel_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy [axis]</link:label>
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    <link:label id="lab_pre_IntangibleAssetsAsOfDisposalDate_label_en-US" xlink:label="lab_pre_IntangibleAssetsAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible Assets as of Disposal Date</link:label>
    <link:label id="lab_pre_IntangibleAssetsAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_IntangibleAssetsAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Intangible Assets as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IntangibleAssetsAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_IntangibleAssetsAsOfDisposalDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IntangibleAssetsAsOfDisposalDate" xlink:to="lab_pre_IntangibleAssetsAsOfDisposalDate" xlink:type="arc" order="1"/>
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    <link:label id="lab_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets_label_en-US" xlink:label="lab_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for Unrealized Fair Value Gain (Loss) On Alternative Assets</link:label>
    <link:label id="lab_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets_documentation_en-US" xlink:label="lab_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments for Unrealized Fair Value Gain (Loss) On Alternative Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets" xlink:href="pre-20251231.xsd#pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets" xlink:to="lab_pre_AdjustmentsForUnrealizedFairValueGainLossOnAlternativeAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain_b63d1d10-e096-4f64-a891-dcaebf640fd8_terseLabel_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units</link:label>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain_label_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForIncomeTaxExpense_cedba245-4eb6-45af-9bfc-07a41d4ceaa7_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income tax expense/(credit)</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncomeTaxExpense_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for income tax expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncomeTaxExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense"/>
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    <link:label id="lab_pre_PreventionGeneticTestingMember_caae883e-0b51-4b23-ad1f-9a2e15a7d3cc_terseLabel_en-US" xlink:label="lab_pre_PreventionGeneticTestingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prevention - genetic testing</link:label>
    <link:label id="lab_pre_PreventionGeneticTestingMember_label_en-US" xlink:label="lab_pre_PreventionGeneticTestingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prevention - Genetic Testing [Member]</link:label>
    <link:label id="lab_pre_PreventionGeneticTestingMember_documentation_en-US" xlink:label="lab_pre_PreventionGeneticTestingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prevention - Genetic Testing</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PreventionGeneticTestingMember" xlink:href="pre-20251231.xsd#pre_PreventionGeneticTestingMember"/>
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    <link:label id="lab_pre_DisclosureOfNetCashInflowArisingOnDisposalOfASubsidiaryTableTextBlock_019c74f5-47d5-729f-9299-9e18e87d9794_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfNetCashInflowArisingOnDisposalOfASubsidiaryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of net cash inflow arising on disposal of a subsidiary</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfNetCashInflowArisingOnDisposalOfASubsidiaryTableTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfNetCashInflowArisingOnDisposalOfASubsidiaryTableTextBlock"/>
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    <link:label id="lab_pre_ExpectedTermMeasurementInputMember_019d2775-c3a1-7966-b2d4-43ed14408ca6_terseLabel_en-US" xlink:label="lab_pre_ExpectedTermMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected term (years)</link:label>
    <link:label id="lab_pre_ExpectedTermMeasurementInputMember_label_en-US" xlink:label="lab_pre_ExpectedTermMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Term, Measurement Input [Member]</link:label>
    <link:label id="lab_pre_ExpectedTermMeasurementInputMember_documentation_en-US" xlink:label="lab_pre_ExpectedTermMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Term, Measurement Input</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ExpectedTermMeasurementInputMember" xlink:href="pre-20251231.xsd#pre_ExpectedTermMeasurementInputMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ExpectedTermMeasurementInputMember" xlink:to="lab_pre_ExpectedTermMeasurementInputMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_198d2226-cb30-4d37-b9e0-2ba3a8e3b2b3_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of preparation of consolidated financial statements and material accounting policy information</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of material accounting policy information [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory"/>
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    <link:label id="lab_ifrs-full_OtherLiabilities_aa079980-f708-4654-954c-519391b1cf8d_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_ifrs-full_OtherLiabilities_label_en-US" xlink:label="lab_ifrs-full_OtherLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherLiabilities" xlink:to="lab_ifrs-full_OtherLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InventoryWritedown2011_356efed2-a358-4f64-a3cc-3a60b1bc75f7_terseLabel_en-US" xlink:label="lab_ifrs-full_InventoryWritedown2011" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory write-down</link:label>
    <link:label id="lab_ifrs-full_InventoryWritedown2011_label_en-US" xlink:label="lab_ifrs-full_InventoryWritedown2011" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory write-down</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InventoryWritedown2011" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InventoryWritedown2011"/>
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    <link:label id="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits_78bd5b95-4891-497e-9ba2-0185511f85c1_terseLabel_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of shares for restricted share unit</link:label>
    <link:label id="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits_label_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) Through Issuance Of Restricted Share Units</link:label>
    <link:label id="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits_documentation_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase (Decrease) Through Issuance Of Restricted Share Units</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits" xlink:href="pre-20251231.xsd#pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits" xlink:to="lab_pre_IncreaseDecreaseThroughIssuanceOfRestrictedShareUnits" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityCentralIndexKey_743f593a-f8f1-4c90-a8e8-550000077ca3_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:label id="lab_dei_EntityCentralIndexKey_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
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    <link:label id="lab_pre_MaterialAccountingPoliciesTable_5371712d-7940-4bb0-ae51-2aff640dba0b_terseLabel_en-US" xlink:label="lab_pre_MaterialAccountingPoliciesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Material Accounting Policies [Table]</link:label>
    <link:label id="lab_pre_MaterialAccountingPoliciesTable_label_en-US" xlink:label="lab_pre_MaterialAccountingPoliciesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Material Accounting Policies [Table]</link:label>
    <link:label id="lab_pre_MaterialAccountingPoliciesTable_documentation_en-US" xlink:label="lab_pre_MaterialAccountingPoliciesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Material Accounting Policies</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_MaterialAccountingPoliciesTable" xlink:href="pre-20251231.xsd#pre_MaterialAccountingPoliciesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_MaterialAccountingPoliciesTable" xlink:to="lab_pre_MaterialAccountingPoliciesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_OtherAssetsNoncurrentAsOfDisposalDate_019c7518-a837-71e0-926a-bb53e0401edb_terseLabel_en-US" xlink:label="lab_pre_OtherAssetsNoncurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other non-current assets</link:label>
    <link:label id="lab_pre_OtherAssetsNoncurrentAsOfDisposalDate_label_en-US" xlink:label="lab_pre_OtherAssetsNoncurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent as of Disposal Date</link:label>
    <link:label id="lab_pre_OtherAssetsNoncurrentAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_OtherAssetsNoncurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Assets, Noncurrent as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OtherAssetsNoncurrentAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_OtherAssetsNoncurrentAsOfDisposalDate"/>
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    <link:label id="lab_ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis_3986561b-66a6-40ac-965d-dad3a884205b_terseLabel_en-US" xlink:label="lab_ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Valuation techniques used in fair value measurement [axis]</link:label>
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    <link:label id="lab_pre_PlanName1Axis_11dec741-5ab5-469c-984a-dee6f3a62026_terseLabel_en-US" xlink:label="lab_pre_PlanName1Axis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:label id="lab_pre_PlanName1Axis_label_en-US" xlink:label="lab_pre_PlanName1Axis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name1 [Axis]</link:label>
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    <link:label id="lab_ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract_7ea650be-fb30-4c66-adc7-6a5e48b97a7d_terseLabel_en-US" xlink:label="lab_ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciliation of changes in deferred tax liability (asset) [abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract"/>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory_95d052e0-f81d-4711-8b87-0da0694b3699_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discontinued operations</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for discontinued operations [text block]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory_2b4ef31d-409a-4e17-a24e-3a6c90717971_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss for the year</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfProfitLossFromOperatingActivitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of profit (loss) from operating activities [text block]</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossAttributableToAbstract_9c0e10a2-7bd3-4faa-b531-9b89e0047492_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss attributable to:</link:label>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToAbstract_label_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss), attributable to [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossAttributableToAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossAttributableToAbstract" xlink:to="lab_ifrs-full_ProfitLossAttributableToAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossOfCombinedEntity_bce009f4-e095-4ddb-baa8-d5d02f21f312_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossOfCombinedEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit (loss) of combined entity as if combination occurred at beginning of period</link:label>
    <link:label id="lab_ifrs-full_ProfitLossOfCombinedEntity_label_en-US" xlink:label="lab_ifrs-full_ProfitLossOfCombinedEntity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss) of combined entity as if combination occurred at beginning of period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossOfCombinedEntity" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossOfCombinedEntity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossOfCombinedEntity" xlink:to="lab_ifrs-full_ProfitLossOfCombinedEntity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory_1eabd7c1-98c5-4c03-804c-734f24161039_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of goodwill</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of changes in goodwill [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory" xlink:to="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_RedemptionsOfFinancialInstruments_019d037e-51e1-7084-b04f-291b65ce30e4_negatedTerseLabel_en-US" xlink:label="lab_pre_RedemptionsOfFinancialInstruments" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Redemptions</link:label>
    <link:label id="lab_pre_RedemptionsOfFinancialInstruments_label_en-US" xlink:label="lab_pre_RedemptionsOfFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemptions Of Financial Instruments</link:label>
    <link:label id="lab_pre_RedemptionsOfFinancialInstruments_documentation_en-US" xlink:label="lab_pre_RedemptionsOfFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redemptions Of Financial Instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_RedemptionsOfFinancialInstruments" xlink:href="pre-20251231.xsd#pre_RedemptionsOfFinancialInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_RedemptionsOfFinancialInstruments" xlink:to="lab_pre_RedemptionsOfFinancialInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityFilerCategory_bb5a5616-1121-4cb2-a8fa-ed4cfe004a46_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_label_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory" xlink:to="lab_dei_EntityFilerCategory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate_563c2d46-2172-4f24-a7a4-d72df1293852_negatedLabel_en-US" xlink:label="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses</link:label>
    <link:label id="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate_label_en-US" xlink:label="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Expenses Recognised As Of Acquisition Date</link:label>
    <link:label id="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate_documentation_en-US" xlink:label="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued Expenses Recognised As Of Acquisition Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AccruedExpensesRecognisedAsOfAcquisitionDate" xlink:href="pre-20251231.xsd#pre_AccruedExpensesRecognisedAsOfAcquisitionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AccruedExpensesRecognisedAsOfAcquisitionDate" xlink:to="lab_pre_AccruedExpensesRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DiscountedCashFlowMember_97da02c5-2529-4937-aa84-33dc7c2c46f6_terseLabel_en-US" xlink:label="lab_ifrs-full_DiscountedCashFlowMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discounted cash flow</link:label>
    <link:label id="lab_ifrs-full_DiscountedCashFlowMember_label_en-US" xlink:label="lab_ifrs-full_DiscountedCashFlowMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discounted cash flow [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscountedCashFlowMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscountedCashFlowMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DiscountedCashFlowMember" xlink:to="lab_ifrs-full_DiscountedCashFlowMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember_f66df812-62d9-42f7-99d0-ffaa5e631215_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After 2 years but within 5 years</link:label>
    <link:label id="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than two years and not later than five years [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember" xlink:to="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ClassAOrdinarySharesMember_6e540c5e-56d4-4f98-bf54-159f6d278129_terseLabel_en-US" xlink:label="lab_pre_ClassAOrdinarySharesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class A ordinary shares</link:label>
    <link:label id="lab_pre_ClassAOrdinarySharesMember_label_en-US" xlink:label="lab_pre_ClassAOrdinarySharesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class A Ordinary Shares [Member]</link:label>
    <link:label id="lab_pre_ClassAOrdinarySharesMember_documentation_en-US" xlink:label="lab_pre_ClassAOrdinarySharesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class A Ordinary Shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ClassAOrdinarySharesMember" xlink:href="pre-20251231.xsd#pre_ClassAOrdinarySharesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ClassAOrdinarySharesMember" xlink:to="lab_pre_ClassAOrdinarySharesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable_522aac98-0f55-4c30-8e15-8d7b191207f8_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of maturity analysis for financial assets held for managing liquidity risk [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of maturity analysis for financial assets held for managing liquidity risk [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable" xlink:to="lab_ifrs-full_DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_TotalDepreciationAndAmortizationChargesAbstract_019db7d2-26a2-7d11-87a3-d4cb4c131751_terseLabel_en-US" xlink:label="lab_pre_TotalDepreciationAndAmortizationChargesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total depreciation and amortization charges represented by:</link:label>
    <link:label id="lab_pre_TotalDepreciationAndAmortizationChargesAbstract_label_en-US" xlink:label="lab_pre_TotalDepreciationAndAmortizationChargesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total depreciation and amortization charges [Abstract]</link:label>
    <link:label id="lab_pre_TotalDepreciationAndAmortizationChargesAbstract_documentation_en-US" xlink:label="lab_pre_TotalDepreciationAndAmortizationChargesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total depreciation and amortization charges</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_TotalDepreciationAndAmortizationChargesAbstract" xlink:href="pre-20251231.xsd#pre_TotalDepreciationAndAmortizationChargesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_TotalDepreciationAndAmortizationChargesAbstract" xlink:to="lab_pre_TotalDepreciationAndAmortizationChargesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate_019c758b-70d5-71a4-bdc0-c3dfc469a475_negatedTerseLabel_en-US" xlink:label="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities - non-current</link:label>
    <link:label id="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate_label_en-US" xlink:label="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities - Non-Current as of Disposal Date</link:label>
    <link:label id="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Liabilities - Non-Current as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate" xlink:to="lab_pre_LeaseLiabilitiesNonCurrentAsOfDisposalDate" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_PercentageOfEntitysReceivables_781eca81-a1cc-415c-b7e2-d99994cf0fd9_terseLabel_en-US" xlink:label="lab_pre_PercentageOfEntitysReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of total trade receivables (%)</link:label>
    <link:label id="lab_pre_PercentageOfEntitysReceivables_label_en-US" xlink:label="lab_pre_PercentageOfEntitysReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Entitys Receivables</link:label>
    <link:label id="lab_pre_PercentageOfEntitysReceivables_documentation_en-US" xlink:label="lab_pre_PercentageOfEntitysReceivables" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage Of Entitys Receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PercentageOfEntitysReceivables" xlink:href="pre-20251231.xsd#pre_PercentageOfEntitysReceivables"/>
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    <link:label id="lab_ifrs-full_ClassesOfOrdinarySharesDomain_e6fbb5b9-b21b-4ac9-894e-74976aae95a3_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfOrdinarySharesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of ordinary shares [domain]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfOrdinarySharesDomain" xlink:to="lab_ifrs-full_ClassesOfOrdinarySharesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations_b6900659-b081-452a-b567-b1927ca106e1_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_2aab86d3-1c77-4bf4-942b-73c8a87bd140_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Operating loss from continuing operations</link:label>
    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_label_en-US" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss) from operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:to="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherCurrentReceivables_9798ecd7-28ec-4a3a-9094-50dec1f0600c_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">- other receivables - current</link:label>
    <link:label id="lab_ifrs-full_OtherCurrentReceivables_label_en-US" xlink:label="lab_ifrs-full_OtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other current receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherCurrentReceivables" xlink:to="lab_ifrs-full_OtherCurrentReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_NumberOfSharesAbstract_019ce2e8-b1e1-7ba0-8b9c-8e6ec4fa4910_terseLabel_en-US" xlink:label="lab_pre_NumberOfSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Shares [Abstract]</link:label>
    <link:label id="lab_pre_NumberOfSharesAbstract_label_en-US" xlink:label="lab_pre_NumberOfSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Shares [Abstract]</link:label>
    <link:label id="lab_pre_NumberOfSharesAbstract_documentation_en-US" xlink:label="lab_pre_NumberOfSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_NumberOfSharesAbstract" xlink:href="pre-20251231.xsd#pre_NumberOfSharesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_NumberOfSharesAbstract" xlink:to="lab_pre_NumberOfSharesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GrossContractualAmountsReceivableForAcquiredReceivables_22e69656-e254-4d7a-9678-aeae87017057_terseLabel_en-US" xlink:label="lab_ifrs-full_GrossContractualAmountsReceivableForAcquiredReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross contractual amounts receivable for acquired receivables</link:label>
    <link:label id="lab_ifrs-full_GrossContractualAmountsReceivableForAcquiredReceivables_label_en-US" xlink:label="lab_ifrs-full_GrossContractualAmountsReceivableForAcquiredReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross contractual amounts receivable for acquired receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossContractualAmountsReceivableForAcquiredReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossContractualAmountsReceivableForAcquiredReceivables"/>
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    <link:label id="lab_dei_EntityAddressAddressLine1_beb3ece0-8c59-46a7-854a-75c67ed5ff51_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line One</link:label>
    <link:label id="lab_dei_EntityAddressAddressLine1_label_en-US" xlink:label="lab_dei_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line One</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine1" xlink:to="lab_dei_EntityAddressAddressLine1" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressAddressLine2_db3579af-f9a2-4f6b-8b2f-21d8ff6a3b2e_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line Two</link:label>
    <link:label id="lab_dei_EntityAddressAddressLine2_label_en-US" xlink:label="lab_dei_EntityAddressAddressLine2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line Two</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
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    <link:label id="lab_ifrs-full_DisclosureOfLeasesExplanatory_ba34000a-813b-4f9f-84d1-a45cd839ed3b_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfLeasesExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfLeasesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfLeasesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of leases [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfLeasesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfLeasesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfLeasesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfLeasesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract_b7967773-0229-4991-9035-02333d1f150d_terseLabel_en-US" xlink:label="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Current Assets Held For Sale And Discontinued Operations [Abstract]</link:label>
    <link:label id="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract_label_en-US" xlink:label="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Current Assets Held For Sale And Discontinued Operations [Abstract]</link:label>
    <link:label id="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract_documentation_en-US" xlink:label="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non-Current Assets Held For Sale And Discontinued Operations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract" xlink:href="pre-20251231.xsd#pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract" xlink:to="lab_pre_NonCurrentAssetsHeldForSaleAndDiscontinuedOperationsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DiscontinuedOperationsMember_e6cf6dac-8e27-43fe-ad4e-51f5e88497f5_terseLabel_en-US" xlink:label="lab_ifrs-full_DiscontinuedOperationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discontinued operations</link:label>
    <link:label id="lab_ifrs-full_DiscontinuedOperationsMember_label_en-US" xlink:label="lab_ifrs-full_DiscontinuedOperationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discontinued operations [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
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    <link:label id="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract_df55f1ac-6852-49d1-ac08-59cff58123c7_terseLabel_en-US" xlink:label="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other changes:</link:label>
    <link:label id="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract_label_en-US" xlink:label="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract</link:label>
    <link:label id="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract_documentation_en-US" xlink:label="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract" xlink:href="pre-20251231.xsd#pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract" xlink:to="lab_pre_OtherChangesInLiabilitiesArisingFromFinancingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue1_07660b17-3f56-4ffd-870b-481a2dc1a02b_terseLabel_en-US" xlink:label="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of the RSUs united granted (in US dollars per share)</link:label>
    <link:label id="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue1_label_en-US" xlink:label="lab_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Weighted Average Grant Date Fair Value1</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue1" xlink:href="pre-20251231.xsd#pre_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue1"/>
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    <link:label id="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock_2492da5f-e85c-472e-b508-43449f66d330_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of changes in goodwill explanatory</link:label>
    <link:label id="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock_label_en-US" xlink:label="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Changes In Goodwill Explanatory [Table Text Block]</link:label>
    <link:label id="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Changes In Goodwill Explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock" xlink:to="lab_pre_DisclosureOfChangesInGoodwillExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfCashFlowsAbstract_96d72322-3abe-481c-a2e0-bae443778158_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of cash flows [abstract]</link:label>
    <link:label id="lab_ifrs-full_StatementOfCashFlowsAbstract_label_en-US" xlink:label="lab_ifrs-full_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of cash flows [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfCashFlowsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfCashFlowsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfCashFlowsAbstract" xlink:to="lab_ifrs-full_StatementOfCashFlowsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialAssetsTable_5fc1b0df-a7a0-4364-be29-5e7789778809_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of financial assets [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialAssetsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of financial assets [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable" xlink:to="lab_ifrs-full_DisclosureOfFinancialAssetsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests_69054c08-e4dc-4b5e-9d6e-a8cc3b69a590_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income/(expense) attributable to non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income, attributable to non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:to="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis_942f1768-818f-4693-878f-0a16b1e1ef3f_terseLabel_en-US" xlink:label="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Type of measurement of expected credit losses [axis]</link:label>
    <link:label id="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis_label_en-US" xlink:label="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of measurement of expected credit losses [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypeOfMeasurementOfExpectedCreditLossesAxis"/>
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    <link:label id="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_b2e7698f-4fc5-435b-b884-d43319a2c4e1_terseLabel_en-US" xlink:label="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title of Individual [Domain]</link:label>
    <link:label id="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_label_en-US" xlink:label="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title and Position [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
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    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_6358911a-6987-47c9-bc8d-e95c0f12f0fe_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercisable (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_label_en-US" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of other equity instruments exercisable in share-based payment arrangement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement"/>
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    <link:label id="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables_2bc966c6-b6ec-4416-9548-0a47a320febe_terseLabel_en-US" xlink:label="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares issued upon conversion of exchange loan notes (in shares)</link:label>
    <link:label id="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables_label_en-US" xlink:label="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Instruments Or Interests Issued Or Issuables</link:label>
    <link:label id="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables_documentation_en-US" xlink:label="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Instruments Or Interests Issued Or Issuables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables" xlink:href="pre-20251231.xsd#pre_NumberOfInstrumentsOrInterestsIssuedOrIssuables"/>
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    <link:label id="lab_srt_RepurchaseAgreementCounterpartyNameDomain_ced379ee-a4aa-434d-8272-309828afee16_terseLabel_en-US" xlink:label="lab_srt_RepurchaseAgreementCounterpartyNameDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Counterparty Name [Domain]</link:label>
    <link:label id="lab_srt_RepurchaseAgreementCounterpartyNameDomain_label_en-US" xlink:label="lab_srt_RepurchaseAgreementCounterpartyNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparty Name [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
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    <link:label id="lab_pre_RevenueFromFundingSupportFromResearchTalentHubProgramOfInnovationAndTechnologyFund_019c9e1b-019e-7795-abab-efdb5c447df0_terseLabel_en-US" xlink:label="lab_pre_RevenueFromFundingSupportFromResearchTalentHubProgramOfInnovationAndTechnologyFund" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue from research talent hub program of innovation and technology fund</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_RevenueFromFundingSupportFromResearchTalentHubProgramOfInnovationAndTechnologyFund" xlink:href="pre-20251231.xsd#pre_RevenueFromFundingSupportFromResearchTalentHubProgramOfInnovationAndTechnologyFund"/>
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    <link:label id="lab_pre_WarrantLiabilitiesAbstract_ed2d039a-e1e4-43c2-9a0c-a35a879f54a5_terseLabel_en-US" xlink:label="lab_pre_WarrantLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrant liabilities [abstract]</link:label>
    <link:label id="lab_pre_WarrantLiabilitiesAbstract_label_en-US" xlink:label="lab_pre_WarrantLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrant Liabilities [Abstract]</link:label>
    <link:label id="lab_pre_WarrantLiabilitiesAbstract_documentation_en-US" xlink:label="lab_pre_WarrantLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Warrant Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_WarrantLiabilitiesAbstract" xlink:href="pre-20251231.xsd#pre_WarrantLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_WarrantLiabilitiesAbstract" xlink:to="lab_pre_WarrantLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment_d36f8381-ebc2-4861-bf02-3e97fd059bbd_terseLabel_en-US" xlink:label="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of instruments (in shares)</link:label>
    <link:label id="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment_label_en-US" xlink:label="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Instruments Or Interests Issued Or Issuable, Purchase Of Equity Method Investment</link:label>
    <link:label id="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment_documentation_en-US" xlink:label="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Instruments Or Interests Issued Or Issuable, Purchase Of Equity Method Investment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment" xlink:href="pre-20251231.xsd#pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment" xlink:to="lab_pre_NumberOfInstrumentsOrInterestsIssuedOrIssuablePurchaseOfEquityMethodInvestment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary_fb095050-e56d-4705-a465-fcadd2873386_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of shares for acquisition</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) through acquisition of subsidiary, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary"/>
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    <link:label id="lab_pre_RevenueFromTheExpirationOfUnusedKits_019d70df-7a90-7e28-be9a-4285d49e3415_terseLabel_en-US" xlink:label="lab_pre_RevenueFromTheExpirationOfUnusedKits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue from the expiration of unused kits</link:label>
    <link:label id="lab_pre_RevenueFromTheExpirationOfUnusedKits_label_en-US" xlink:label="lab_pre_RevenueFromTheExpirationOfUnusedKits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue From The Expiration Of Unused Kits</link:label>
    <link:label id="lab_pre_RevenueFromTheExpirationOfUnusedKits_documentation_en-US" xlink:label="lab_pre_RevenueFromTheExpirationOfUnusedKits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue From The Expiration Of Unused Kits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_RevenueFromTheExpirationOfUnusedKits" xlink:href="pre-20251231.xsd#pre_RevenueFromTheExpirationOfUnusedKits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_RevenueFromTheExpirationOfUnusedKits" xlink:to="lab_pre_RevenueFromTheExpirationOfUnusedKits" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_e452322e-11a9-45cf-b90a-05d3b3cffd08_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CustomerrelatedIntangibleAssetsMember_316910aa-0cec-4463-a34a-387bc26c8585_terseLabel_en-US" xlink:label="lab_ifrs-full_CustomerrelatedIntangibleAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer relationship</link:label>
    <link:label id="lab_ifrs-full_CustomerrelatedIntangibleAssetsMember_label_en-US" xlink:label="lab_ifrs-full_CustomerrelatedIntangibleAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer-related intangible assets [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CustomerrelatedIntangibleAssetsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CustomerrelatedIntangibleAssetsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CustomerrelatedIntangibleAssetsMember" xlink:to="lab_ifrs-full_CustomerrelatedIntangibleAssetsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities_70fbe18d-5ab8-472a-b199-28105171b944_negatedLabel_en-US" xlink:label="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest element of lease rentals paid</link:label>
    <link:label id="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments Of Interest On Lease Liabilities Classified As Financing Activities</link:label>
    <link:label id="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities_documentation_en-US" xlink:label="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments Of Interest On Lease Liabilities Classified As Financing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:href="pre-20251231.xsd#pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:to="lab_pre_PaymentsOfInterestOnLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ServicesRechargeMember_019d4cec-c4a7-7e86-b3d7-defe7c5435a2_terseLabel_en-US" xlink:label="lab_pre_ServicesRechargeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Services recharge</link:label>
    <link:label id="lab_pre_ServicesRechargeMember_label_en-US" xlink:label="lab_pre_ServicesRechargeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Services Recharge [Member]</link:label>
    <link:label id="lab_pre_ServicesRechargeMember_documentation_en-US" xlink:label="lab_pre_ServicesRechargeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Services Recharge</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ServicesRechargeMember" xlink:href="pre-20251231.xsd#pre_ServicesRechargeMember"/>
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    <link:label id="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod_11c90867-a732-4abc-91c0-24ee1ce9917d_terseLabel_en-US" xlink:label="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interests in equity-accounted investees</link:label>
    <link:label id="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod_label_en-US" xlink:label="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:to="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_a5485dbf-6621-4bb0-a31d-21d890e9cafc_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems"/>
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    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems_d9bb4592-4815-4504-b94c-3895891a77d9_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of fair value measurement of assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value measurement of assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems"/>
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    <link:label id="lab_ifrs-full_AmortisationExpense_2566ae70-29fa-44d9-915a-ce60d976a969_terseLabel_en-US" xlink:label="lab_ifrs-full_AmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of intangible assets</link:label>
    <link:label id="lab_ifrs-full_AmortisationExpense_label_en-US" xlink:label="lab_ifrs-full_AmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortisation expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AmortisationExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AmortisationExpense"/>
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    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAbstract_13d1ae54-4c41-44d0-9c10-7a7749d6540b_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income/(expense)</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAbstract_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeAbstract"/>
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    <link:label id="lab_ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory_7c1a5057-e15f-4b13-a161-398a0916deae_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Approval of Consolidated Financial Statements</link:label>
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    <link:label id="lab_ifrs-full_IssuedCapital_ea1a7f30-8519-4fa4-a27f-72cacfd5db30_terseLabel_en-US" xlink:label="lab_ifrs-full_IssuedCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ordinary shares</link:label>
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    <link:label id="lab_ifrs-full_IssuedCapital_d5d19a8a-dcb4-40b3-a038-1919f080c3fb_periodEndLabel_en-US" xlink:label="lab_ifrs-full_IssuedCapital" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at the end</link:label>
    <link:label id="lab_ifrs-full_IssuedCapital_554ab165-1b35-45af-9bc9-72291282e975_verboseLabel_en-US" xlink:label="lab_ifrs-full_IssuedCapital" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Issued and fully paid share capital</link:label>
    <link:label id="lab_ifrs-full_IssuedCapital_label_en-US" xlink:label="lab_ifrs-full_IssuedCapital" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Issued capital</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems_fc7c8f37-4965-4ac8-964c-dc493d5de9ac_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of liabilities arising from financing activities [line items]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems"/>
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    <link:label id="lab_pre_TradeReceivablesPeriod_c917ecd3-d3bb-4049-aae5-98f13287d456_terseLabel_en-US" xlink:label="lab_pre_TradeReceivablesPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade receivables period</link:label>
    <link:label id="lab_pre_TradeReceivablesPeriod_label_en-US" xlink:label="lab_pre_TradeReceivablesPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade Receivables, Period</link:label>
    <link:label id="lab_pre_TradeReceivablesPeriod_documentation_en-US" xlink:label="lab_pre_TradeReceivablesPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade Receivables, Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_TradeReceivablesPeriod" xlink:href="pre-20251231.xsd#pre_TradeReceivablesPeriod"/>
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    <link:label id="lab_pre_ProceedsFromRedemptionOfShortTermDeposits_44c26505-ce60-4d14-ad73-52bbb1f5654b_terseLabel_en-US" xlink:label="lab_pre_ProceedsFromRedemptionOfShortTermDeposits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from redemption of short-term deposits</link:label>
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    <link:label id="lab_pre_ProceedsFromRedemptionOfShortTermDeposits_documentation_en-US" xlink:label="lab_pre_ProceedsFromRedemptionOfShortTermDeposits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds From Redemption of Short-Term Deposits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ProceedsFromRedemptionOfShortTermDeposits" xlink:href="pre-20251231.xsd#pre_ProceedsFromRedemptionOfShortTermDeposits"/>
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    <link:label id="lab_pre_VolatilityRateMeasurementInputMember_019d0366-0037-7079-a5b1-3381f6e207f9_terseLabel_en-US" xlink:label="lab_pre_VolatilityRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Volatility rate, measurement input</link:label>
    <link:label id="lab_pre_VolatilityRateMeasurementInputMember_label_en-US" xlink:label="lab_pre_VolatilityRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Volatility Rate, Measurement Input [Member]</link:label>
    <link:label id="lab_pre_VolatilityRateMeasurementInputMember_documentation_en-US" xlink:label="lab_pre_VolatilityRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Volatility Rate, Measurement Input</link:label>
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    <link:label id="lab_ifrs-full_CategoriesOfFinancialAssetsAxis_20b8315c-ca24-438c-aa46-90396e7a236f_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Categories of financial assets [axis]</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialAssetsAxis_label_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Categories of financial assets [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsAxis"/>
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    <link:label id="lab_ifrs-full_TimingOfTransferOfGoodsOrServicesDomain_c268f66c-2ed3-48c7-bd26-f788e6b21f3c_terseLabel_en-US" xlink:label="lab_ifrs-full_TimingOfTransferOfGoodsOrServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Timing of transfer of goods or services [domain]</link:label>
    <link:label id="lab_ifrs-full_TimingOfTransferOfGoodsOrServicesDomain_label_en-US" xlink:label="lab_ifrs-full_TimingOfTransferOfGoodsOrServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Timing of transfer of goods or services [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TimingOfTransferOfGoodsOrServicesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TimingOfTransferOfGoodsOrServicesDomain"/>
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    <link:label id="lab_ifrs-full_ExercisePriceShareOptionsGranted2019_80c6eb30-5a41-4324-ad66-12128d635c96_terseLabel_en-US" xlink:label="lab_ifrs-full_ExercisePriceShareOptionsGranted2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercise price (in USD per share)</link:label>
    <link:label id="lab_ifrs-full_ExercisePriceShareOptionsGranted2019_label_en-US" xlink:label="lab_ifrs-full_ExercisePriceShareOptionsGranted2019" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise price, share options granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExercisePriceShareOptionsGranted2019" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExercisePriceShareOptionsGranted2019"/>
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    <link:label id="lab_ifrs-full_NumberOfSharesOutstanding_0abde3b2-f7af-4fa0-a6a0-af4c526e79f2_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of shares outstanding (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesOutstanding_label_en-US" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of shares outstanding</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesOutstanding" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesOutstanding"/>
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    <link:label id="lab_pre_DisclosureOfAnalysisOfAssetsAndLiabilitiesOfDisposalOfASubsidiaryTableTextBlock_019c74ea-3d97-7005-b43f-a931b96b004a_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfAnalysisOfAssetsAndLiabilitiesOfDisposalOfASubsidiaryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of analysis of assets and liabilities of disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_OrdinarySharesAfterReverseStockMember_ce7ef918-b25c-4bb1-a802-9f623ba0531a_terseLabel_en-US" xlink:label="lab_pre_OrdinarySharesAfterReverseStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ordinary shares after reverse stock</link:label>
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    <link:label id="lab_ifrs-full_ProductsAndServicesAxis_34a2cf05-1479-496e-a83c-53cf8b1e1617_terseLabel_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products and services [axis]</link:label>
    <link:label id="lab_ifrs-full_ProductsAndServicesAxis_label_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products and services [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesAxis"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable"/>
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    <link:label id="lab_ifrs-full_FinancialLiabilities_ab0aaff0-b922-468c-8630-45fae4433079_periodStartLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities at beginning of period</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilities_c87a19d9-f5c9-43cc-ad5f-0f6729e78df0_periodEndLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities at end of period</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilities_0bbde4c4-f700-4980-9afa-375c78e7586b_totalLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilities_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialLiabilities" xlink:to="lab_ifrs-full_FinancialLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_GoodwillAsOfDisposalDate_019c7514-bf68-79df-aa51-e87ee0efffc1_terseLabel_en-US" xlink:label="lab_pre_GoodwillAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_pre_GoodwillAsOfDisposalDate_label_en-US" xlink:label="lab_pre_GoodwillAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill as of Disposal Date</link:label>
    <link:label id="lab_pre_GoodwillAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_GoodwillAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Goodwill as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_GoodwillAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_GoodwillAsOfDisposalDate"/>
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    <link:label id="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities_019cd852-d4d7-7a1f-bb6a-ca05899f25f0_terseLabel_en-US" xlink:label="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions from acquisitions</link:label>
    <link:label id="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities_label_en-US" xlink:label="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions From Acquisitions, Liabilities Arising From Financing Activities</link:label>
    <link:label id="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities_documentation_en-US" xlink:label="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additions From Acquisitions, Liabilities Arising From Financing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities" xlink:href="pre-20251231.xsd#pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities" xlink:to="lab_pre_AdditionsFromAcquisitionsLiabilitiesArisingFromFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_069b11a1-0d1f-4c8d-a1eb-803e382f0c17_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Income tax (expense)/credit</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_b7f54449-6d30-4cf0-a6b3-062c8669301f_totalLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Tax expense/(credit)</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_bf0d9cd1-c56a-47ad-a827-d30912f545a4_negatedLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_label_en-US" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax expense (income)</link:label>
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    <link:label id="lab_srt_CryptoAssetAxis_019ce1b3-fb45-76ca-a9a4-65e044390db2_terseLabel_en-US" xlink:label="lab_srt_CryptoAssetAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crypto Asset [Axis]</link:label>
    <link:label id="lab_srt_CryptoAssetAxis_label_en-US" xlink:label="lab_srt_CryptoAssetAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crypto Asset [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CryptoAssetAxis" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CryptoAssetAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_CryptoAssetAxis" xlink:to="lab_srt_CryptoAssetAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SignificantUnobservableInputLiabilities_0fd3a106-7ab9-47c7-9ade-d51ef848e910_terseLabel_en-US" xlink:label="lab_ifrs-full_SignificantUnobservableInputLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant unobservable inputs</link:label>
    <link:label id="lab_ifrs-full_SignificantUnobservableInputLiabilities_label_en-US" xlink:label="lab_ifrs-full_SignificantUnobservableInputLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant unobservable input, liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantUnobservableInputLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantUnobservableInputLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SignificantUnobservableInputLiabilities" xlink:to="lab_ifrs-full_SignificantUnobservableInputLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_country_HK_6eb73687-3abe-418b-9f02-ddf6e0801920_terseLabel_en-US" xlink:label="lab_country_HK" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hong Kong</link:label>
    <link:label id="lab_country_HK_label_en-US" xlink:label="lab_country_HK" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">HONG KONG</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_HK" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_HK"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_HK" xlink:to="lab_country_HK" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_597ef314-f95f-4616-844a-34ab45639424_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Events</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of events after reporting period [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:to="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized_d65ad121-f488-4aad-b127-aa387a0fe499_terseLabel_en-US" xlink:label="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax effect of deductible temporary differences not recognized</link:label>
    <link:label id="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized_label_en-US" xlink:label="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax Effect Of Deductible Temporary Difference Not Recognized</link:label>
    <link:label id="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized_documentation_en-US" xlink:label="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax Effect Of Deductible Temporary Difference Not Recognized</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized" xlink:href="pre-20251231.xsd#pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized" xlink:to="lab_pre_TaxEffectOfDeductibleTemporaryDifferenceNotRecognized" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisposalOfASubsidiaryAbstract_019c75a1-ada9-73c6-8241-8c6aa998a893_terseLabel_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal of a subsidiary [Abstract]</link:label>
    <link:label id="lab_pre_DisposalOfASubsidiaryAbstract_label_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal of a subsidiary [Abstract]</link:label>
    <link:label id="lab_pre_DisposalOfASubsidiaryAbstract_documentation_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disposal of a subsidiary [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisposalOfASubsidiaryAbstract" xlink:href="pre-20251231.xsd#pre_DisposalOfASubsidiaryAbstract"/>
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    <link:label id="lab_dei_DocumentTransitionReport_2656e11e-a24b-4eef-9a67-a0403709b753_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentTransitionReport" xlink:to="lab_dei_DocumentTransitionReport" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TradeAndOtherReceivables_520aee9e-dfbc-4817-a74d-7e42a2b47400_totalLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Deposits, prepayments and other receivables</link:label>
    <link:label id="lab_ifrs-full_TradeAndOtherReceivables_label_en-US" xlink:label="lab_ifrs-full_TradeAndOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and other receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeAndOtherReceivables" xlink:to="lab_ifrs-full_TradeAndOtherReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_9ae09e52-9aa9-42f6-b162-5bdbe5eb27b5_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from operating activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) operating activities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_GainLossExchangeDifferenceOnDeferredTaxRecognised_f8441ac1-992a-4876-b506-fc118deb8022_terseLabel_en-US" xlink:label="lab_pre_GainLossExchangeDifferenceOnDeferredTaxRecognised" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exchange differences</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_GainLossExchangeDifferenceOnDeferredTaxRecognised" xlink:href="pre-20251231.xsd#pre_GainLossExchangeDifferenceOnDeferredTaxRecognised"/>
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    <link:label id="lab_ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory_98532732-a80d-4691-b68b-80e20d4a16ad_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pending Litigation</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of other provisions, contingent liabilities and contingent assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory"/>
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    <link:label id="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory_853c17ea-55dc-4808-a63d-13a16a568ad3_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of analysis of single amount of discontinued operations</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of analysis of single amount of discontinued operations [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsExplanatory"/>
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    <link:label id="lab_ifrs-full_Goodwill_4827a19f-b533-427d-9513-a78eee2a4c3d_terseLabel_en-US" xlink:label="lab_ifrs-full_Goodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
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    <link:label id="lab_dei_DocumentType_eccd45bb-7931-483e-8641-8045c929b412_terseLabel_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_label_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
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    <link:label id="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_04787cc6-2285-4126-8bcc-6ca3ec22478a_terseLabel_en-US" xlink:label="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity-settled share-based payment expenses</link:label>
    <link:label id="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_label_en-US" xlink:label="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expense from share-based payment transactions with employees</link:label>
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    <link:label id="lab_srt_ProductOrServiceAxis_019db7c3-d583-7021-865b-effb8c941b99_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:label id="lab_srt_ProductOrServiceAxis_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
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    <link:label id="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrumentUndiscountedCashFlows_8ab04013-af49-4e2d-a080-ef90ff154850_terseLabel_en-US" xlink:label="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrumentUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities for puttable financial instrument</link:label>
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    <link:label id="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrumentUndiscountedCashFlows_documentation_en-US" xlink:label="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrumentUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Current Liabilities For Puttable Financial Instrument, Undiscounted Cash Flows</link:label>
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    <link:label id="lab_ifrs-full_ClassesOfFinancialAssetsAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of financial assets [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
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    <link:label id="lab_pre_GrossProfitAfterDiscontinuedOperationElimination_019d046a-9105-7484-94a9-418e4615d501_terseLabel_en-US" xlink:label="lab_pre_GrossProfitAfterDiscontinuedOperationElimination" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross profit, after discontinued operation elimination</link:label>
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    <link:label id="lab_pre_GrossProfitAfterDiscontinuedOperationElimination_documentation_en-US" xlink:label="lab_pre_GrossProfitAfterDiscontinuedOperationElimination" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gross Profit, After Discontinued Operation Elimination</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_GrossProfitAfterDiscontinuedOperationElimination" xlink:href="pre-20251231.xsd#pre_GrossProfitAfterDiscontinuedOperationElimination"/>
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    <link:label id="lab_ifrs-full_GrossLeaseLiabilities_6157455d-8b8a-4193-8764-7ace5e4ae4b7_terseLabel_en-US" xlink:label="lab_ifrs-full_GrossLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
    <link:label id="lab_ifrs-full_GrossLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_GrossLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross lease liabilities</link:label>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill_e5f5c3aa-4e12-4c2c-998c-ba9fb3739cbc_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exchange differences</link:label>
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    <link:label id="lab_ifrs-full_IncomeStatementAbstract_362a72f3-6f04-493b-a612-c1863dc8d24f_terseLabel_en-US" xlink:label="lab_ifrs-full_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit or loss [abstract]</link:label>
    <link:label id="lab_ifrs-full_IncomeStatementAbstract_label_en-US" xlink:label="lab_ifrs-full_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit or loss [abstract]</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests_019d70be-5d54-7c8e-a432-55ddce0a0f1c_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">- from continuing operations</link:label>
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    <link:label id="lab_ifrs-full_CurrentContractLiabilities_c83b6047-d7b7-465b-9b2c-54c629eb4c07_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentContractLiabilities_c587d767-d8ae-4bed-9756-b72cd3ed3337_periodStartLabel_en-US" xlink:label="lab_ifrs-full_CurrentContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at January 1</link:label>
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    <link:label id="lab_ifrs-full_CurrentContractLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current contract liabilities</link:label>
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    <link:label id="lab_srt_RangeAxis_04594026-ad8a-4e04-8762-1c0791944a57_terseLabel_en-US" xlink:label="lab_srt_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Axis]</link:label>
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    <link:label id="lab_ifrs-full_EarningsPerShareTable_563a356b-75ff-487e-b2d6-879b7807e698_terseLabel_en-US" xlink:label="lab_ifrs-full_EarningsPerShareTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Earnings per share [table]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_4b4993c2-d12f-400f-8c6d-d76c357860f5_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of analysis of single amount of discontinued operations [table]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable_80fa1f6d-7d76-46de-9cb5-32272e08e20d_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of changes in goodwill [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of changes in goodwill [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillTable"/>
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    <link:label id="lab_ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory_18bca6ca-2745-4ef8-97b0-168947f3dd65_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of movement in the loss allowance account in respect of trade receivable</link:label>
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    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParent_9a5f3978-13f0-422f-a6bf-812c9fb13af7_totalLabel_en-US" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total equity attributable to equity shareholders of the Company</link:label>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParent_019c6b72-e10a-7b18-b7ac-be27c0879b4b_verboseLabel_en-US" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Carrying amount of the Group&#8217;s interest in the associate</link:label>
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    <link:label id="lab_ifrs-full_EarningsPerShareAbstract_39b4bba2-3769-4d2c-9105-39c5d9d33193_terseLabel_en-US" xlink:label="lab_ifrs-full_EarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss per share</link:label>
    <link:label id="lab_ifrs-full_EarningsPerShareAbstract_359da841-6db2-4cd0-b6d4-3d3eb065a72c_verboseLabel_en-US" xlink:label="lab_ifrs-full_EarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loss per share</link:label>
    <link:label id="lab_ifrs-full_EarningsPerShareAbstract_label_en-US" xlink:label="lab_ifrs-full_EarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings per share [abstract]</link:label>
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    <link:label id="lab_ifrs-full_SubsidiariesWithMaterialNoncontrollingInterestsMember_c881dc90-df01-4aa6-aad7-4249d9240130_terseLabel_en-US" xlink:label="lab_ifrs-full_SubsidiariesWithMaterialNoncontrollingInterestsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiaries with material non-controlling interests</link:label>
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    <link:label id="lab_ifrs-full_RangeAxis_24990c99-45e8-4e00-9b70-f7f4135c125a_terseLabel_en-US" xlink:label="lab_ifrs-full_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [axis]</link:label>
    <link:label id="lab_ifrs-full_RangeAxis_label_en-US" xlink:label="lab_ifrs-full_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis"/>
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    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract_c877e81d-b3a8-4ab8-822a-6182e4a887b6_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of changes in goodwill [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of changes in goodwill [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInGoodwillAbstract"/>
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    <link:label id="lab_ifrs-full_ComponentsOfEquityAxis_17e1edd0-9a68-4efe-95ad-8e6b799d4747_terseLabel_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of equity [axis]</link:label>
    <link:label id="lab_ifrs-full_ComponentsOfEquityAxis_label_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Components of equity [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis"/>
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    <link:label id="lab_pre_RiskFreeRateMeasurementInputMember_019d0365-636f-7bc3-802a-0c14edf7069a_terseLabel_en-US" xlink:label="lab_pre_RiskFreeRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Risk free rate, measurement input</link:label>
    <link:label id="lab_pre_RiskFreeRateMeasurementInputMember_label_en-US" xlink:label="lab_pre_RiskFreeRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Risk Free Rate, Measurement Input [Member]</link:label>
    <link:label id="lab_pre_RiskFreeRateMeasurementInputMember_documentation_en-US" xlink:label="lab_pre_RiskFreeRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Risk Free Rate, Measurement Input</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_RiskFreeRateMeasurementInputMember" xlink:href="pre-20251231.xsd#pre_RiskFreeRateMeasurementInputMember"/>
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    <link:label id="lab_ifrs-full_RestrictedShareUnitsMember_4289b34c-2c35-45c1-adfb-4ad520c38437_terseLabel_en-US" xlink:label="lab_ifrs-full_RestrictedShareUnitsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted share units</link:label>
    <link:label id="lab_ifrs-full_RestrictedShareUnitsMember_label_en-US" xlink:label="lab_ifrs-full_RestrictedShareUnitsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted share units [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RestrictedShareUnitsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestrictedShareUnitsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RestrictedShareUnitsMember" xlink:to="lab_ifrs-full_RestrictedShareUnitsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations_13cfc583-624b-4f05-b955-56466d641f25_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash used in financing activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) financing activities, discontinued operations</link:label>
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    <link:label id="lab_pre_PrePrenetics2022PlanMember_7faf6010-5bf4-4787-ab94-8666ad3537b9_terseLabel_en-US" xlink:label="lab_pre_PrePrenetics2022PlanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PRE Prenetics 2022 Plan</link:label>
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    <link:label id="lab_pre_DisclosureOfDisposalOfSubsidiaryTextBlock_019ce27a-0166-7573-b263-9ba80f1e8811_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfDisposalOfSubsidiaryTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_PaymentsOfCapitalElementOfLeaseLiabilitiesClassifiedAsFinancingActivities_e6e19eae-6329-45e0-ad36-a0535f684822_negatedLabel_en-US" xlink:label="lab_pre_PaymentsOfCapitalElementOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital element of lease rentals paid</link:label>
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    <link:label id="lab_pre_NumberOfShareIssuedForVestingOfRestrictedShareUnits_aa47283e-f3ef-4427-8d5c-cab28cd801b8_terseLabel_en-US" xlink:label="lab_pre_NumberOfShareIssuedForVestingOfRestrictedShareUnits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share issued for vesting of restricted share units (in shares)</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossBeforeTax_56cfd2c0-807b-4f7f-87f8-14c7f2e118a6_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loss before taxation</link:label>
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    <link:label id="lab_ifrs-full_ProductsAndServicesDomain_47b29515-be88-48bf-b5b1-b8e3a69d2dd8_terseLabel_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products and services [domain]</link:label>
    <link:label id="lab_ifrs-full_ProductsAndServicesDomain_label_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products and services [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain"/>
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    <link:label id="lab_ifrs-full_IncomeApproachMember_019d2772-af36-79ae-a3f6-4d2f4352247a_terseLabel_en-US" xlink:label="lab_ifrs-full_IncomeApproachMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income approach</link:label>
    <link:label id="lab_ifrs-full_IncomeApproachMember_label_en-US" xlink:label="lab_ifrs-full_IncomeApproachMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income approach [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeApproachMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeApproachMember"/>
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    <link:label id="lab_ifrs-full_WeightedAverageShares_9981d293-240d-45ea-a55f-bc2ca1620d72_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageShares" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average number of ordinary shares for the purposes of basic loss per share (in shares)</link:label>
    <link:label id="lab_ifrs-full_WeightedAverageShares_label_en-US" xlink:label="lab_ifrs-full_WeightedAverageShares" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted average number of ordinary shares used in calculating basic earnings per share</link:label>
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    <link:label id="lab_ifrs-full_CurrentAdvancesToSuppliers_814595bb-37cd-4ac8-8d50-5d59fbe8742c_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAdvancesToSuppliers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">- deposits</link:label>
    <link:label id="lab_ifrs-full_CurrentAdvancesToSuppliers_label_en-US" xlink:label="lab_ifrs-full_CurrentAdvancesToSuppliers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current advances to suppliers</link:label>
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    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill_019c66b7-26d2-7fa6-b9d4-2002b6541db1_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Impairment of goodwill</link:label>
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    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill_label_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment loss recognised in profit or loss, goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentLossRecognisedInProfitOrLossGoodwill"/>
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    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsTable_b13da441-169f-43c0-975a-eb8b02ec32d1_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [table]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsTable"/>
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    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_554d9dea-f65d-4025-8bd3-da057b4ed3d5_terseLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity-settled share-based payment expenses (note)</link:label>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_label_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Key management personnel compensation, share-based payment</link:label>
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    <link:label id="lab_pre_PaymentsForOperatingLeaseLiabilities_9e861bd2-422a-40eb-8aac-a781a60aefda_negatedLabel_en-US" xlink:label="lab_pre_PaymentsForOperatingLeaseLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Within operating cash flows</link:label>
    <link:label id="lab_pre_PaymentsForOperatingLeaseLiabilities_label_en-US" xlink:label="lab_pre_PaymentsForOperatingLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments For Operating Lease Liabilities</link:label>
    <link:label id="lab_pre_PaymentsForOperatingLeaseLiabilities_documentation_en-US" xlink:label="lab_pre_PaymentsForOperatingLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments For Operating Lease Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PaymentsForOperatingLeaseLiabilities" xlink:href="pre-20251231.xsd#pre_PaymentsForOperatingLeaseLiabilities"/>
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    <link:label id="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesMember_019c66a0-dfd2-7ed5-97aa-4c6b412af058_terseLabel_en-US" xlink:label="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diagnostics - sale of precision oncology services</link:label>
    <link:label id="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesMember_label_en-US" xlink:label="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diagnostics Sale of Precision Oncology Services [Member]</link:label>
    <link:label id="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesMember_documentation_en-US" xlink:label="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Diagnostics Sale of Precision Oncology Services</link:label>
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    <link:label id="lab_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss_b2aac972-3bda-43c4-b9e0-c57b9e6214e5_terseLabel_en-US" xlink:label="lab_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value gain/(loss) on financial assets at fair value through profit or loss</link:label>
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    <link:label id="lab_ifrs-full_ComputerEquipmentMember_e32b6570-f461-4d2e-b8db-4afa4e5fffa3_terseLabel_en-US" xlink:label="lab_ifrs-full_ComputerEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Computer equipment</link:label>
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    <link:label id="lab_ifrs-full_ComprehensiveIncomeContinuingAndDiscontinuedOperationsAbstract_defc0066-ac74-4430-aa67-f32db2f3f7e0_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeContinuingAndDiscontinuedOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Continuing operations</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeContinuingAndDiscontinuedOperationsAbstract_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeContinuingAndDiscontinuedOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income, continuing and discontinued operations [abstract]</link:label>
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    <link:label id="lab_ifrs-full_MajorCustomersDomain_6ecf4046-3eaa-4d8a-9656-2c2eb6cd5487_terseLabel_en-US" xlink:label="lab_ifrs-full_MajorCustomersDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major customers [domain]</link:label>
    <link:label id="lab_ifrs-full_MajorCustomersDomain_label_en-US" xlink:label="lab_ifrs-full_MajorCustomersDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Major customers [domain]</link:label>
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    <link:label id="lab_ifrs-full_DeferredTaxExpenseIncomeAbstract_0334888c-2e5c-4866-911c-33755283d56b_terseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxExpenseIncomeAbstract_label_en-US" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax expense (income) [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxExpenseIncomeAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxExpenseIncomeAbstract"/>
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    <link:label id="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement2019_51e6f426-b504-4d3a-8246-2eae8bfa1054_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercised (in US dollar per share)</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_d45ee008-7455-4d96-8949-16aa4e5ab826_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash from/(used in) financing activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_76eb31fb-d1d8-4293-8fb1-7e0255651585_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash outflow from financing activities</link:label>
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    <link:label id="lab_pre_IfrsIncreaseDecreaseInOperatingCapitalAbstract_69f55a99-ad08-43ef-a8e2-7d5730c82ec2_terseLabel_en-US" xlink:label="lab_pre_IfrsIncreaseDecreaseInOperatingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in:</link:label>
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    <link:label id="lab_pre_CustomerHealthSportDistributionMember_f227c4a2-1b56-4d16-a6b1-c25f28a61f3e_terseLabel_en-US" xlink:label="lab_pre_CustomerHealthSportDistributionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consumer health - sports distribution</link:label>
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    <link:label id="lab_pre_ReservesAndRetainedEarnings_401e28e3-4475-49ef-b3e0-ba3e1206ea20_terseLabel_en-US" xlink:label="lab_pre_ReservesAndRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserves</link:label>
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    <link:label id="lab_pre_ReservesAndRetainedEarnings_documentation_en-US" xlink:label="lab_pre_ReservesAndRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reserves And Retained Earnings</link:label>
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    <link:label id="lab_pre_ClassOfShareCapitalOneAxis_a6b36afb-7ab0-4b25-9964-33ef6ef40ba6_terseLabel_en-US" xlink:label="lab_pre_ClassOfShareCapitalOneAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class Of Share Capital One [Axis]</link:label>
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    <link:label id="lab_pre_ResearchAndDevelopmentExpensesMember_e8dbdcd2-1bb6-4a55-b033-4382b13e5b9c_terseLabel_en-US" xlink:label="lab_pre_ResearchAndDevelopmentExpensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Research and development expenses</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_ResearchAndDevelopmentExpensesMember" xlink:href="pre-20251231.xsd#pre_ResearchAndDevelopmentExpensesMember"/>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory_712e4fbc-c46c-42eb-a56d-e90b9cd08173_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss per share</link:label>
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    <link:label id="lab_dei_EntityCurrentReportingStatus_1338aaae-817f-4b3f-b551-490c5a683921_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfDeferredTaxesExplanatory_be0c1997-e3e6-4be3-a702-f122ba7438d3_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax</link:label>
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    <link:label id="lab_pre_StockExchangeAxis_c99bdc16-9fc2-418b-9c53-1d18e9c24b09_terseLabel_en-US" xlink:label="lab_pre_StockExchangeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Exchange [axis]</link:label>
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    <link:label id="lab_ifrs-full_StatementOfChangesInEquityTable_6c81ccdb-d0ed-46a1-98a7-457fa064a358_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [table]</link:label>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityTable_label_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:to="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities_0638d9d5-afc6-4974-90c4-66b16a82d4b9_terseLabel_en-US" xlink:label="lab_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average effective interest rate, lease liabilities (%)</link:label>
    <link:label id="lab_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities_label_en-US" xlink:label="lab_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Effective Interest Rate, Lease Liabilities</link:label>
    <link:label id="lab_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities_documentation_en-US" xlink:label="lab_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted Average Effective Interest Rate, Lease Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_WeightedAverageEffectiveInterestRateLeaseLiabilities" xlink:href="pre-20251231.xsd#pre_WeightedAverageEffectiveInterestRateLeaseLiabilities"/>
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    <link:label id="lab_pre_UnlistedSecuritiesMember_990ca54a-b35e-4f8d-ae76-76e4a540f999_terseLabel_en-US" xlink:label="lab_pre_UnlistedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unlisted securities</link:label>
    <link:label id="lab_pre_UnlistedSecuritiesMember_label_en-US" xlink:label="lab_pre_UnlistedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unlisted Securities [Member]</link:label>
    <link:label id="lab_pre_UnlistedSecuritiesMember_documentation_en-US" xlink:label="lab_pre_UnlistedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unlisted Securities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_UnlistedSecuritiesMember" xlink:href="pre-20251231.xsd#pre_UnlistedSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_UnlistedSecuritiesMember" xlink:to="lab_pre_UnlistedSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CostOfSales_f2cb6dda-94cf-48d9-8db3-0f2d8c1509f5_negatedLabel_en-US" xlink:label="lab_ifrs-full_CostOfSales" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Direct costs</link:label>
    <link:label id="lab_ifrs-full_CostOfSales_f57489ef-2446-4482-b366-d09e698eb535_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_CostOfSales" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Direct costs</link:label>
    <link:label id="lab_ifrs-full_CostOfSales_label_en-US" xlink:label="lab_ifrs-full_CostOfSales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of sales</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CostOfSales" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CostOfSales"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CostOfSales" xlink:to="lab_ifrs-full_CostOfSales" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfAssetsDomain_73b6fdf5-c0c6-4f3f-a240-8edd26b58fdf_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of assets [domain]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfAssetsDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of assets [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain" xlink:to="lab_ifrs-full_ClassesOfAssetsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract_0dc60904-92fa-473a-8931-b2dd3aa9a2dc_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract"/>
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    <link:label id="lab_dei_CurrentFiscalYearEndDate_a15a14e9-e8bb-4e79-91bf-99d873210153_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate" xlink:to="lab_dei_CurrentFiscalYearEndDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill_019ce48c-1c17-7aa9-9eb4-910427255c73_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Eliminated on disposal of a subsidiary</link:label>
    <link:label id="lab_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill_label_en-US" xlink:label="lab_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease through loss of control of subsidiary, intangible assets and goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill" xlink:to="lab_ifrs-full_DecreaseThroughLossOfControlOfSubsidiaryIntangibleAssetsAndGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_ecfc368b-9865-49dc-97f4-f92b816b13fa_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from disposal of property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_label_en-US" xlink:label="lab_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from sales of property, plant and equipment, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_RedemptionsOfFinancialAssetsAtFairValue_019d2779-75cd-7ffa-b8da-a8f24094f9ca_negatedLabel_en-US" xlink:label="lab_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Redemptions</link:label>
    <link:label id="lab_pre_RedemptionsOfFinancialAssetsAtFairValue_019c5c9e-f098-7560-87e1-fb2dae7c1803_terseLabel_en-US" xlink:label="lab_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemptions</link:label>
    <link:label id="lab_pre_RedemptionsOfFinancialAssetsAtFairValue_label_en-US" xlink:label="lab_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Redemptions Of Financial Assets At Fair Value</link:label>
    <link:label id="lab_pre_RedemptionsOfFinancialAssetsAtFairValue_documentation_en-US" xlink:label="lab_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redemptions Of Financial Assets At Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:href="pre-20251231.xsd#pre_RedemptionsOfFinancialAssetsAtFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:to="lab_pre_RedemptionsOfFinancialAssetsAtFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets_888187f7-ed43-4108-baf6-d9682d0d043a_negatedTerseLabel_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net remeasurement of loss allowance</link:label>
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    <link:label id="lab_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets_documentation_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase (Decrease) Through Remeasurement, Financial Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets" xlink:href="pre-20251231.xsd#pre_IncreaseDecreaseThroughRemeasurementFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets" xlink:to="lab_pre_IncreaseDecreaseThroughRemeasurementFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract_9b95ba72-f280-4d2b-afc7-d5e2e27e190b_terseLabel_en-US" xlink:label="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities for puttable financial instrument [Abstract]</link:label>
    <link:label id="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract_label_en-US" xlink:label="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities For Puttable Financial Instrument [Abstract]</link:label>
    <link:label id="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract_documentation_en-US" xlink:label="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liabilities For Puttable Financial Instrument</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LiabilitiesForPuttableFinancialInstrumentAbstract" xlink:href="pre-20251231.xsd#pre_LiabilitiesForPuttableFinancialInstrumentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_LiabilitiesForPuttableFinancialInstrumentAbstract" xlink:to="lab_pre_LiabilitiesForPuttableFinancialInstrumentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ConsiderationPaidContingentOnPerformanceMilestone_019d85e9-c690-7c71-b543-9e0f2be59fe0_terseLabel_en-US" xlink:label="lab_pre_ConsiderationPaidContingentOnPerformanceMilestone" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingent consideration upon achievement of performance milestones</link:label>
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    <link:label id="lab_pre_ConsiderationPaidContingentOnPerformanceMilestone_documentation_en-US" xlink:label="lab_pre_ConsiderationPaidContingentOnPerformanceMilestone" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Consideration Paid, Contingent Performance Milestone</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ConsiderationPaidContingentOnPerformanceMilestone" xlink:href="pre-20251231.xsd#pre_ConsiderationPaidContingentOnPerformanceMilestone"/>
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    <link:label id="lab_ifrs-full_BottomOfRangeMember_98fea9c4-129b-405a-88ee-ab77d25b48e1_terseLabel_en-US" xlink:label="lab_ifrs-full_BottomOfRangeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bottom</link:label>
    <link:label id="lab_ifrs-full_BottomOfRangeMember_label_en-US" xlink:label="lab_ifrs-full_BottomOfRangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bottom of range [member]</link:label>
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    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInJointVenture_efaa098c-a600-45ac-9ee7-788e5cf7feb2_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInJointVenture" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proportion of the Group&#8217;s interest in the associate</link:label>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInJointVenture_019d70e4-3c17-715e-98fa-c7f2cc52a3b6_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInJointVenture" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proportion of ownership interest in joint venture</link:label>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInJointVenture_label_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInJointVenture" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of ownership interest in joint venture</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInJointVenture" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInJointVenture"/>
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    <link:label id="lab_pre_SharePriceShareOptionsGranted_c29dd1b8-d9b1-43dc-aa26-616cddfbbcdb_terseLabel_en-US" xlink:label="lab_pre_SharePriceShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share price (in USD per share)</link:label>
    <link:label id="lab_pre_SharePriceShareOptionsGranted_label_en-US" xlink:label="lab_pre_SharePriceShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Price, Share Options Granted</link:label>
    <link:label id="lab_pre_SharePriceShareOptionsGranted_documentation_en-US" xlink:label="lab_pre_SharePriceShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share Price, Share Options Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_SharePriceShareOptionsGranted" xlink:href="pre-20251231.xsd#pre_SharePriceShareOptionsGranted"/>
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    <link:label id="lab_ifrs-full_DisclosureOfMajorCustomersTable_248f5bb4-f2e6-4e1b-ae9b-a0963b0aa524_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfMajorCustomersTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of major customers [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfMajorCustomersTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfMajorCustomersTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of major customers [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMajorCustomersTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMajorCustomersTable"/>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_238c5b05-ee41-4b27-94e3-861cc98440be_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares issued upon conversion of exchange loan notes</link:label>
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    <link:label id="lab_pre_DisclosureOfShortTermDepositsAndCashAndCashEquivalentsExplanatoryTextBlock_1e45753f-e54a-44a3-9070-adcf72602057_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfShortTermDepositsAndCashAndCashEquivalentsExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term deposits and cash and cash equivalents</link:label>
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    <link:label id="lab_pre_DigitalAssetFairValue_019caee2-b3c3-79db-b616-d778c5c659fe_terseLabel_en-US" xlink:label="lab_pre_DigitalAssetFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bitcoin price</link:label>
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    <link:label id="lab_ifrs-full_InternalCreditGradesDomain_69756ab6-f0d8-4e6d-8540-d7077fa1bace_terseLabel_en-US" xlink:label="lab_ifrs-full_InternalCreditGradesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Internal credit grades [domain]</link:label>
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    <link:label id="lab_ifrs-full_LiabilitiesAbstract_022a588a-861f-4e84-90a3-4e6177c3900b_verboseLabel_en-US" xlink:label="lab_ifrs-full_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_ifrs-full_LiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities [abstract]</link:label>
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    <link:label id="lab_ifrs-full_CarryingAmountMember_label_en-US" xlink:label="lab_ifrs-full_CarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Carrying amount [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CarryingAmountMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember"/>
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    <link:label id="lab_ifrs-full_UnobservableInputsDomain_d79a18ff-d1a9-446c-9a5d-bbfef049f36c_terseLabel_en-US" xlink:label="lab_ifrs-full_UnobservableInputsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unobservable inputs [domain]</link:label>
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    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_50ec6a1b-ff94-4ad1-8e44-4bd6b999f3f9_terseLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salaries, wages and other benefits</link:label>
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    <link:label id="lab_dei_SecurityExchangeName_298a1e93-e6d4-48ab-b416-ee41bbf28e0f_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Security Exchange Name</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory_81984296-9369-472b-a36c-aeb0a6b0de93_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of fair value of RSUs and assumptions</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory_eea5b0e2-9761-428a-8723-c1013dcdeb70_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of stock option performance, share options granted during the year</link:label>
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    <link:label id="lab_pre_ExpectedDividendAsPercentageOtherEquityInstrumentsGranted_105026ee-4ecf-44df-978c-f9a714daf926_terseLabel_en-US" xlink:label="lab_pre_ExpectedDividendAsPercentageOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected dividends</link:label>
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    <link:label id="lab_ifrs-full_PercentageOfVotingEquityInterestsAcquired_7e2de640-8795-4fcf-a9c4-b984bc798ceb_terseLabel_en-US" xlink:label="lab_ifrs-full_PercentageOfVotingEquityInterestsAcquired" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of voting equity interests acquired (%)</link:label>
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    <link:label id="lab_exch_XNIM_10fb9ebd-2914-4efe-b447-f2a6e81b1d17_verboseLabel_en-US" xlink:label="lab_exch_XNIM" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">NASDAQ Intermarket</link:label>
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    <link:label id="lab_pre_DisclosureOfDetailedInformationAboutCashFlowsForLeasesExplantoryTableTextBlock_905e5ea5-d8f3-4b26-add2-3de226f0c22a_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfDetailedInformationAboutCashFlowsForLeasesExplantoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of amounts included in the consolidated statement of cash flows</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasExplanatory_ee0b0ecb-5e11-489f-a705-20594e576a20_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of revenue and non-current assets by regions</link:label>
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    <link:label id="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract_3707ad59-7ff8-4ff8-ac03-e5b4d2e1150d_terseLabel_en-US" xlink:label="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Item that may be reclassified subsequently to profit or loss:</link:label>
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    <link:label id="lab_pre_DisclosureOfGeneralInformationAboutReportingEntityAbstract_e1e64884-c6e9-4857-a897-267f8ced1f38_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfGeneralInformationAboutReportingEntityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reporting entity</link:label>
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    <link:label id="lab_srt_RangeMember_5a84dcd4-7a71-4cfc-b886-e246ed212734_terseLabel_en-US" xlink:label="lab_srt_RangeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Domain]</link:label>
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    <link:label id="lab_pre_ClassOfWarrantsOrRightsExercisePricePerShare_e732ac86-082e-44f6-8786-c2f30bff80b9_terseLabel_en-US" xlink:label="lab_pre_ClassOfWarrantsOrRightsExercisePricePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of warrants or rights exercise price (in US Dollars per share)</link:label>
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    <link:label id="lab_pre_ServicesTransferredOvertimeMember_0e7b24bd-96ae-4347-ad67-ec12ffd6ed0a_terseLabel_en-US" xlink:label="lab_pre_ServicesTransferredOvertimeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Services transferred overtime</link:label>
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    <link:label id="lab_pre_ServicesTransferredOvertimeMember_documentation_en-US" xlink:label="lab_pre_ServicesTransferredOvertimeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Services Transferred Overtime</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ServicesTransferredOvertimeMember" xlink:href="pre-20251231.xsd#pre_ServicesTransferredOvertimeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ServicesTransferredOvertimeMember" xlink:to="lab_pre_ServicesTransferredOvertimeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_24798b47-f168-4485-96cc-a1d4298169b2_terseLabel_en-US" xlink:label="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Translation reserve</link:label>
    <link:label id="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_label_en-US" xlink:label="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve of exchange differences on translation [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:to="lab_ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis_f79f3b28-c1ed-492f-b7ad-337667932544_terseLabel_en-US" xlink:label="lab_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities arising from financing activities [axis]</link:label>
    <link:label id="lab_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis_label_en-US" xlink:label="lab_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities arising from financing activities [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:to="lab_ifrs-full_LiabilitiesArisingFromFinancingActivitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeFromDiscontinuedOperationsAttributableToNoncontrollingInterests_019d70be-5d54-7941-b40d-852530977777_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">- from discontinued operations</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeFromDiscontinuedOperationsAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income from discontinued operations, attributable to non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeFromDiscontinuedOperationsAttributableToNoncontrollingInterests"/>
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    <link:label id="lab_country_TW_81168712-b10a-4bde-8b51-9293fb25bdc3_terseLabel_en-US" xlink:label="lab_country_TW" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taiwan</link:label>
    <link:label id="lab_country_TW_label_en-US" xlink:label="lab_country_TW" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">TAIWAN</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_TW" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_TW"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_TW" xlink:to="lab_country_TW" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentWarrantLiability_35e653c3-762e-4096-929c-7552054d59bc_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentWarrantLiability" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrant liabilities</link:label>
    <link:label id="lab_ifrs-full_NoncurrentWarrantLiability_label_en-US" xlink:label="lab_ifrs-full_NoncurrentWarrantLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current warrant liability</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentWarrantLiability" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentWarrantLiability"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentWarrantLiability" xlink:to="lab_ifrs-full_NoncurrentWarrantLiability" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill_1ce2d7cd-23ce-4c70-8772-b1024a686636_terseLabel_en-US" xlink:label="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated useful lives</link:label>
    <link:label id="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Useful life measured as period of time, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfShareCapitalAxis_a81e8fd3-c002-45b6-846e-d40e7161cdbf_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfShareCapitalAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of share capital [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfShareCapitalAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfShareCapitalAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of share capital [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfShareCapitalAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfShareCapitalAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfShareCapitalAxis" xlink:to="lab_ifrs-full_ClassesOfShareCapitalAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_IndirectBeneficialInterestMember_138eca82-36d7-4fe2-8544-64e4ca1f0bde_terseLabel_en-US" xlink:label="lab_pre_IndirectBeneficialInterestMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indirect beneficial interest (%)</link:label>
    <link:label id="lab_pre_IndirectBeneficialInterestMember_label_en-US" xlink:label="lab_pre_IndirectBeneficialInterestMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Indirect Beneficial Interest [Member]</link:label>
    <link:label id="lab_pre_IndirectBeneficialInterestMember_documentation_en-US" xlink:label="lab_pre_IndirectBeneficialInterestMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Indirect Beneficial Interest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IndirectBeneficialInterestMember" xlink:href="pre-20251231.xsd#pre_IndirectBeneficialInterestMember"/>
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    <link:label id="lab_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory_a8047238-0206-4876-ac63-350b9b94ba37_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of consolidation</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of basis of consolidation [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBasisOfConsolidationExplanatory"/>
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    <link:label id="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss_99f30b87-02a6-419b-896e-bb467d09e5c8_terseLabel_en-US" xlink:label="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax effect of non-deductible expenses</link:label>
    <link:label id="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss_label_en-US" xlink:label="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax effect of expense not deductible in determining taxable profit (tax loss)</link:label>
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    <link:label id="lab_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_daca5458-8306-4d09-b776-51d128cdc193_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfAntidilutiveInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antidilutive Securities [Domain]</link:label>
    <link:label id="lab_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_label_en-US" xlink:label="lab_ifrs-full_TypesOfAntidilutiveInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of antidilutive instruments [domain]</link:label>
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    <link:label id="lab_ifrs-full_NumberOfSharesAuthorised_a6853d8b-7728-4d55-accc-097b19058271_terseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesAuthorised" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of shares authorised (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesAuthorised_label_en-US" xlink:label="lab_ifrs-full_NumberOfSharesAuthorised" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of shares authorised</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesAuthorised" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesAuthorised"/>
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    <link:label id="lab_ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented_875b1e6b-5067-4ce6-946e-344bf33d474c_verboseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Anti-dilutive excluded from the diluted weighted-average number of ordinary shares (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented_label_en-US" xlink:label="lab_ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of instruments that are antidilutive in period presented</link:label>
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    <link:label id="lab_ifrs-full_Equity_e1b46727-ba3b-4d7a-ba48-d419397ab1a6_totalLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total equity</link:label>
    <link:label id="lab_ifrs-full_Equity_c5ca6f57-cdbd-495a-862a-250ad9d991f3_periodStartLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_ifrs-full_Equity_0fce15f2-548d-4f3d-bb1c-78def3c95a7e_periodEndLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_ifrs-full_Equity_878c5c0e-d976-45c7-8650-7aa0ad9b2935_terseLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity</link:label>
    <link:label id="lab_ifrs-full_Equity_label_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
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    <link:label id="lab_dei_EntityAddressesAddressTypeAxis_6aa070ad-04f5-4f9c-8e4b-04e23e8548f7_terseLabel_en-US" xlink:label="lab_dei_EntityAddressesAddressTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Addresses, Address Type [Axis]</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations_a690ef65-0575-4196-928a-a4e46ae50968_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net cash from/(used in) operating activities</link:label>
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    <link:label id="lab_pre_SellingAndMarketingExpensesMember_019c7a5a-634b-7b70-9f01-02016ded26be_terseLabel_en-US" xlink:label="lab_pre_SellingAndMarketingExpensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling and marketing expenses</link:label>
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    <link:label id="lab_ifrs-full_GrossProfit_ba9fd844-a6e8-43df-aac4-01e621c744c3_totalLabel_en-US" xlink:label="lab_ifrs-full_GrossProfit" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
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    <link:label id="lab_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax_label_en-US" xlink:label="lab_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, net of tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:to="lab_ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_PropertyPlantAndEquipmentAndIntangibleAssetsRecognisedAsOfAcquisitionDate_7a831a45-9e61-4a67-8108-26edae85614c_terseLabel_en-US" xlink:label="lab_pre_PropertyPlantAndEquipmentAndIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment and intangible assets</link:label>
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    <link:label id="lab_pre_PropertyPlantAndEquipmentAndIntangibleAssetsRecognisedAsOfAcquisitionDate_documentation_en-US" xlink:label="lab_pre_PropertyPlantAndEquipmentAndIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Property, Plant And Equipment And Intangible Assets Recognised As Of Acquisition Date</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_PropertyPlantAndEquipmentAndIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:to="lab_pre_PropertyPlantAndEquipmentAndIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialAssets_019ce289-823a-7dcf-bed1-40d2954bc484_negatedLabel_en-US" xlink:label="lab_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Eliminated on disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_AdjustmentsForShareOfProfitLossOfAssociateAndJointVenturesAccountedForUsingEquityMethod_019cfe3f-2190-7949-b71c-fb16f6b9890b_negatedTerseLabel_en-US" xlink:label="lab_pre_AdjustmentsForShareOfProfitLossOfAssociateAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Share of loss of equity-accounted investees, net of tax</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentsForShareOfProfitLossOfAssociateAndJointVenturesAccountedForUsingEquityMethod" xlink:href="pre-20251231.xsd#pre_AdjustmentsForShareOfProfitLossOfAssociateAndJointVenturesAccountedForUsingEquityMethod"/>
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    <link:label id="lab_pre_TaxEffectUtilizationOfPreviouslyUnrecognizedTaxLoss_documentation_en-US" xlink:label="lab_pre_TaxEffectUtilizationOfPreviouslyUnrecognizedTaxLoss" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax Effect Utilization Of Previously Unrecognized Tax Loss</link:label>
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    <link:label id="lab_ifrs-full_Level1OfFairValueHierarchyMember_59f8174c-46ab-4168-a692-4739c07919b9_terseLabel_en-US" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level 1</link:label>
    <link:label id="lab_ifrs-full_Level1OfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Level 1 of fair value hierarchy [member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Level1OfFairValueHierarchyMember" xlink:to="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxesPaidRefund_33aea83a-9942-4549-861d-894f92e94c90_negatedLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income taxes paid</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxesPaidRefund_label_en-US" xlink:label="lab_ifrs-full_IncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income taxes paid (refund)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxesPaidRefund" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxesPaidRefund"/>
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    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_df773fed-4ea4-4792-8b04-5eab215321ba_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems"/>
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    <link:label id="lab_pre_RevenueFromRenderingServicesRechargedRelatedPartyTransactions_019d4867-bf73-73d6-83bc-d827b45b032b_terseLabel_en-US" xlink:label="lab_pre_RevenueFromRenderingServicesRechargedRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales to an equity-accounted investee (Note(a))</link:label>
    <link:label id="lab_pre_RevenueFromRenderingServicesRechargedRelatedPartyTransactions_label_en-US" xlink:label="lab_pre_RevenueFromRenderingServicesRechargedRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue From Rendering Services Recharged, Related Party Transactions</link:label>
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    <link:label id="lab_ifrs-full_DiscountRateMeasurementInputMember_13470814-ec98-4493-a277-5dd4229e62b3_terseLabel_en-US" xlink:label="lab_ifrs-full_DiscountRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement input, discount rate</link:label>
    <link:label id="lab_ifrs-full_DiscountRateMeasurementInputMember_label_en-US" xlink:label="lab_ifrs-full_DiscountRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discount rate, measurement input [member]</link:label>
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    <link:label id="lab_pre_InvestmentFunds1Member_019c666a-f005-7d2b-a561-2e801a157cc4_terseLabel_en-US" xlink:label="lab_pre_InvestmentFunds1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment funds</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_InvestmentFunds1Member" xlink:href="pre-20251231.xsd#pre_InvestmentFunds1Member"/>
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    <link:label id="lab_ifrs-full_Level2OfFairValueHierarchyMember_452a08cb-c91e-4a41-ba0e-b2aec91a70ce_terseLabel_en-US" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level 2</link:label>
    <link:label id="lab_ifrs-full_Level2OfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Level 2 of fair value hierarchy [member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Level2OfFairValueHierarchyMember" xlink:to="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [abstract]</link:label>
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    <link:label id="lab_ifrs-full_FixturesAndFittingsMember_8ba8f239-bdc3-4dee-8d76-e5d44178a7b4_terseLabel_en-US" xlink:label="lab_ifrs-full_FixturesAndFittingsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixtures and furniture</link:label>
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    <link:label id="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019_50420601-cff5-4c99-8992-faf93b92888e_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average exercise price of share options outstanding in share-based payment arrangement (in $ per share)</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss), attributable to owners of parent</link:label>
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    <link:label id="lab_ifrs-full_SalesAndMarketingExpense_019cd8da-d73f-72b6-9d2f-4274ece1505c_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_SalesAndMarketingExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Selling and marketing expenses</link:label>
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    <link:label id="lab_pre_OverseasMember_a2e8e0a5-d646-4269-a338-71ab4a91716f_terseLabel_en-US" xlink:label="lab_pre_OverseasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Overseas</link:label>
    <link:label id="lab_pre_OverseasMember_label_en-US" xlink:label="lab_pre_OverseasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Overseas [Member]</link:label>
    <link:label id="lab_pre_OverseasMember_documentation_en-US" xlink:label="lab_pre_OverseasMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Overseas</link:label>
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    <link:label id="lab_ifrs-full_MajorCustomersAxis_d04caf37-5f3c-4ffb-9472-b0b16b1b3b66_terseLabel_en-US" xlink:label="lab_ifrs-full_MajorCustomersAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major customers [axis]</link:label>
    <link:label id="lab_ifrs-full_MajorCustomersAxis_label_en-US" xlink:label="lab_ifrs-full_MajorCustomersAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Major customers [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MajorCustomersAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MajorCustomersAxis"/>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_DepositsPrepaymentsAndOtherReceivablesRecognisedAsOfAcquisitionDate" xlink:href="pre-20251231.xsd#pre_DepositsPrepaymentsAndOtherReceivablesRecognisedAsOfAcquisitionDate"/>
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    <link:label id="lab_ifrs-full_DeferredTaxLiabilityAsset_d061360a-c079-43a0-94c8-a7893d38c8b2_periodStartLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">At the beginning of the period</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxLiabilityAsset_2b7d2651-6340-4b31-bb01-bc97a32ce9ee_periodEndLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">At the end of the year</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax liability (asset)</link:label>
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    <link:label id="lab_ifrs-full_CurrentLiabilities_d89e2a73-f6eb-425a-a292-0acf3a0ff2d0_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilities_5c533fa1-785d-42b6-acf5-3a3cf4f8376a_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Amount due to a related company</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities"/>
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    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss_073b254c-d37d-447d-851f-e1b257665a3d_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities at fair value through profit or loss</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities at fair value through profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss"/>
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    <link:label id="lab_ifrs-full_DividendsReceived_3b4566b8-6869-4a16-8b98-ae2888c5b203_terseLabel_en-US" xlink:label="lab_ifrs-full_DividendsReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends received by the Group</link:label>
    <link:label id="lab_ifrs-full_DividendsReceived_label_en-US" xlink:label="lab_ifrs-full_DividendsReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsReceived" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DividendsReceived"/>
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    <link:label id="lab_ifrs-full_TradeAndOtherReceivablesAbstract_3464bb6e-d71e-4053-a72d-881d8b2a62db_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade and other receivables</link:label>
    <link:label id="lab_ifrs-full_TradeAndOtherReceivablesAbstract_label_en-US" xlink:label="lab_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and other receivables [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivablesAbstract"/>
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    <link:label id="lab_pre_DisclosureOfReconciliationOfLiabilitiesArisingFromPuttableFinancialInstrumentLineItems_6df4ef3d-8a39-464d-9f07-cf240fc0e031_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfReconciliationOfLiabilitiesArisingFromPuttableFinancialInstrumentLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of liabilities arising from puttable financial instrument [Line Items]</link:label>
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    <link:label id="lab_ifrs-full_ExpenseByNatureAbstract_label_en-US" xlink:label="lab_ifrs-full_ExpenseByNatureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expenses by nature [abstract]</link:label>
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    <link:label id="lab_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities_d68b1eb6-55a2-477c-9108-ffdbf9100cc3_terseLabel_en-US" xlink:label="lab_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value (loss)/gain on warrant liabilities</link:label>
    <link:label id="lab_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities_label_en-US" xlink:label="lab_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (Losses) On Change In Fair Value Of Warrant Liabilities</link:label>
    <link:label id="lab_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities_documentation_en-US" xlink:label="lab_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gains (Losses) On Change In Fair Value Of Warrant Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities" xlink:href="pre-20251231.xsd#pre_GainsLossesOnChangeInFairValueOfWarrantLiabilities"/>
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    <link:label id="lab_pre_DirectBeneficialInterestMember_707ad119-5bee-4ce3-9085-f29aa47ba2cb_terseLabel_en-US" xlink:label="lab_pre_DirectBeneficialInterestMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Direct beneficial interest (%)</link:label>
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    <link:label id="lab_pre_DirectBeneficialInterestMember_documentation_en-US" xlink:label="lab_pre_DirectBeneficialInterestMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Direct Beneficial Interest</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DirectBeneficialInterestMember" xlink:href="pre-20251231.xsd#pre_DirectBeneficialInterestMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DirectBeneficialInterestMember" xlink:to="lab_pre_DirectBeneficialInterestMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_019ce256-435d-7e0e-bba5-4bc971812afa_verboseLabel_en-US" xlink:label="lab_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Gain on disposal of a subsidiary</link:label>
    <link:label id="lab_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_019ce16b-85b6-746b-9135-6744461b733c_terseLabel_en-US" xlink:label="lab_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on disposal (note 10)</link:label>
    <link:label id="lab_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost_label_en-US" xlink:label="lab_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (losses) recognised when control of subsidiary is lost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesRecognisedWhenControlInSubsidiaryIsLost"/>
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    <link:label id="lab_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_52d9dac1-b1ec-4c74-94f8-7cc5d3dd45f2_terseLabel_en-US" xlink:label="lab_ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Continuing and discontinued operations [axis]</link:label>
    <link:label id="lab_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_label_en-US" xlink:label="lab_ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Continuing and discontinued operations [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
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    <link:label id="lab_ifrs-full_Inventories_2d674785-168e-4d31-ba12-2e16e4024b19_terseLabel_en-US" xlink:label="lab_ifrs-full_Inventories" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_ifrs-full_Inventories_0359f045-0718-4734-b5b1-0423f4d95966_totalLabel_en-US" xlink:label="lab_ifrs-full_Inventories" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_ifrs-full_Inventories_label_en-US" xlink:label="lab_ifrs-full_Inventories" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current inventories</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Inventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Inventories"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Inventories" xlink:to="lab_ifrs-full_Inventories" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis_e93afb7e-a6e6-44b8-b401-728edd640255_terseLabel_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units [axis]</link:label>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis_label_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:to="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncontrollingInterestsMember_af292bb1-ba4b-4122-b009-c0a707f32306_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterestsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non- controlling interests</link:label>
    <link:label id="lab_ifrs-full_NoncontrollingInterestsMember_label_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterestsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-controlling interests [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterestsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterestsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncontrollingInterestsMember" xlink:to="lab_ifrs-full_NoncontrollingInterestsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_d31e4b27-5247-48ba-81b3-09423e60dfa3_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_019d70bf-1ced-7fa9-a5bb-ad8c0b778148_totalLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_1e35c457-a9b6-47e3-bb8b-15db4e75b9af_verboseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total comprehensive expense attributable to non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income, attributable to non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"/>
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    <link:label id="lab_dei_DocumentAccountingStandard_6e05ca41-92bf-44bc-8c94-59710d73d35d_terseLabel_en-US" xlink:label="lab_dei_DocumentAccountingStandard" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Accounting Standard</link:label>
    <link:label id="lab_dei_DocumentAccountingStandard_label_en-US" xlink:label="lab_dei_DocumentAccountingStandard" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Accounting Standard</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAccountingStandard" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAccountingStandard"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentAccountingStandard" xlink:to="lab_dei_DocumentAccountingStandard" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities_02ea7945-8b26-4477-a057-fac59927de2d_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eliminated on disposal of a subsidiary (note 34)</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) through obtaining or losing control of subsidiaries or other businesses, liabilities arising from financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities"/>
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    <link:label id="lab_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_ddb94219-f555-4edb-b89d-8813ac9e33da_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of temporary difference, unused tax losses and unused tax credits [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of temporary difference, unused tax losses and unused tax credits [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:to="lab_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_c0812c0e-f995-43ba-87cd-a1bbd3e3dd02_terseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average remaining contractual life of outstanding share options</link:label>
    <link:label id="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_label_en-US" xlink:label="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted average remaining contractual life of outstanding share options</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:to="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory_bb745542-137b-4cde-b1c7-603f95bef328_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity-settled share-based payment transactions</link:label>
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    <link:label id="lab_pre_ScheduleOfCreditRiskGradingFrameworkTableTextBlock_c9abb15c-143b-4fd5-8025-fe2e3d034492_terseLabel_en-US" xlink:label="lab_pre_ScheduleOfCreditRiskGradingFrameworkTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of credit risk grading framework</link:label>
    <link:label id="lab_pre_ScheduleOfCreditRiskGradingFrameworkTableTextBlock_label_en-US" xlink:label="lab_pre_ScheduleOfCreditRiskGradingFrameworkTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Credit Risk Grading Framework [Table Text Block]</link:label>
    <link:label id="lab_pre_ScheduleOfCreditRiskGradingFrameworkTableTextBlock_documentation_en-US" xlink:label="lab_pre_ScheduleOfCreditRiskGradingFrameworkTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Credit Risk Grading Framework</link:label>
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    <link:label id="lab_ifrs-full_StatementOfChangesInEquityAbstract_05e2994f-a59e-438b-a3ff-efdeaf7aba87_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [abstract]</link:label>
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    <link:label id="lab_ifrs-full_MeasurementDomain_fc3750b0-f82c-4b9a-af6e-423d27a05060_terseLabel_en-US" xlink:label="lab_ifrs-full_MeasurementDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement [domain]</link:label>
    <link:label id="lab_ifrs-full_MeasurementDomain_label_en-US" xlink:label="lab_ifrs-full_MeasurementDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement [domain]</link:label>
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    <link:label id="lab_pre_DisposalOfASubsidiaryIdentifiableAssetsDisposedOf_019d047e-4f4a-7a2f-b938-8d848739843e_negatedLabel_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryIdentifiableAssetsDisposedOf" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net assets disposed of</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory_663c6b16-8c20-48a2-b465-38e6deee0adb_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of acquisition date fair value of each major class of consideration transferred</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about business combination [text block]</link:label>
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    <link:label id="lab_pre_DigitalAssets_019c7a6c-9842-755e-a300-ae11de376846_terseLabel_en-US" xlink:label="lab_pre_DigitalAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Digital assets</link:label>
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    <link:label id="lab_pre_CashFlowProjectionsPeriod_bfd70838-bc7f-4daa-9ed1-a23b7c417d0f_terseLabel_en-US" xlink:label="lab_pre_CashFlowProjectionsPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flow projections period</link:label>
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    <link:label id="lab_pre_CashFlowProjectionsPeriod_documentation_en-US" xlink:label="lab_pre_CashFlowProjectionsPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash Flow Projections, Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_CashFlowProjectionsPeriod" xlink:href="pre-20251231.xsd#pre_CashFlowProjectionsPeriod"/>
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    <link:label id="lab_pre_InDefaultMember_e778b3ee-9acc-410b-83e6-040e75ddbd19_terseLabel_en-US" xlink:label="lab_pre_InDefaultMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">In default</link:label>
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    <link:label id="lab_pre_InDefaultMember_documentation_en-US" xlink:label="lab_pre_InDefaultMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">In Default</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems"/>
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    <link:label id="lab_ifrs-full_SignificantUnobservableInputAssets_67832eb2-7912-4408-85e3-08627f929bd8_terseLabel_en-US" xlink:label="lab_ifrs-full_SignificantUnobservableInputAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Significant unobservable input, assets (%)</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantUnobservableInputAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantUnobservableInputAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SignificantUnobservableInputAssets" xlink:to="lab_ifrs-full_SignificantUnobservableInputAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_TaxEffectOfPreviouslyUnrecognizedTemporaryDifferencesRecognizedInCurrentPeriod_77653e3c-d979-4bf6-b0e3-2db2e2759995_negatedLabel_en-US" xlink:label="lab_pre_TaxEffectOfPreviouslyUnrecognizedTemporaryDifferencesRecognizedInCurrentPeriod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Tax effect of previously unrecognized temporary differences recognized in current year</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_TaxEffectOfPreviouslyUnrecognizedTemporaryDifferencesRecognizedInCurrentPeriod" xlink:href="pre-20251231.xsd#pre_TaxEffectOfPreviouslyUnrecognizedTemporaryDifferencesRecognizedInCurrentPeriod"/>
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    <link:label id="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_d39e8516-184b-439d-b3c0-c01d30e17edb_verboseLabel_en-US" xlink:label="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of restricted shares granted (in shares)</link:label>
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    <link:label id="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_label_en-US" xlink:label="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of other equity instruments granted in share-based payment arrangement</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates_880be92d-25ba-46f4-bf3e-879bac929a55_negatedLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gain on partial disposal of an equity-accounted investee</link:label>
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    <link:label id="lab_ifrs-full_CashOnHand_17fc4e9c-1606-4e38-9ca8-07ace87b8623_terseLabel_en-US" xlink:label="lab_ifrs-full_CashOnHand" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash on hand</link:label>
    <link:label id="lab_ifrs-full_CashOnHand_label_en-US" xlink:label="lab_ifrs-full_CashOnHand" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash on hand</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashOnHand" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashOnHand"/>
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    <link:label id="lab_pre_DisclosureOfOtherNoncurrentAssetsTableTextBlock_11b74571-6cd3-425c-9e74-e6329b5d7ae9_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfOtherNoncurrentAssetsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of other non-current assets</link:label>
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    <link:label id="lab_dei_LegalEntityAxis_6ffbe069-1120-444f-b3c2-d7f919dadfb2_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_label_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
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    <link:label id="lab_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_931207b8-ea22-4b91-9cfa-fd00c5bf3b38_terseLabel_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiaries [axis]</link:label>
    <link:label id="lab_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_label_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiaries [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
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    <link:label id="lab_ifrs-full_BestEstimateAtAcquisitionDateOfContractualCashFlowsNotExpectedToBeCollectedForAcquiredReceivables_fa6beded-930a-4861-908a-edf53f8c5e50_terseLabel_en-US" xlink:label="lab_ifrs-full_BestEstimateAtAcquisitionDateOfContractualCashFlowsNotExpectedToBeCollectedForAcquiredReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Best estimate at acquisition date of contractual cash flows not expected to be collected for acquired receivables</link:label>
    <link:label id="lab_ifrs-full_BestEstimateAtAcquisitionDateOfContractualCashFlowsNotExpectedToBeCollectedForAcquiredReceivables_label_en-US" xlink:label="lab_ifrs-full_BestEstimateAtAcquisitionDateOfContractualCashFlowsNotExpectedToBeCollectedForAcquiredReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Best estimate at acquisition date of contractual cash flows not expected to be collected for acquired receivables</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity_d10b4f40-9461-42f5-8ac6-2db44d82f62c_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Loss for the purpose of diluted loss per share being net loss attributable to equity shareholders of the company, from the discontinued operations</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfGoingConcernExplanatory_ab6c3939-1477-4637-8366-1bb2e7083e26_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Going concern</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfGoingConcernExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of going concern [text block]</link:label>
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    <link:label id="lab_pre_AccruedProfessionalFeesCurrent1_f59242d1-7e7c-4d1d-b945-f0a611f73416_terseLabel_en-US" xlink:label="lab_pre_AccruedProfessionalFeesCurrent1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued professional fee</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_AccruedProfessionalFeesCurrent1" xlink:href="pre-20251231.xsd#pre_AccruedProfessionalFeesCurrent1"/>
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    <link:label id="lab_pre_PercentageOfOwnershipInterestDisposed_4b09dc71-1f84-4a9b-910a-f7e7a2d7ab39_terseLabel_en-US" xlink:label="lab_pre_PercentageOfOwnershipInterestDisposed" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of ownership interest disposed (%)</link:label>
    <link:label id="lab_pre_PercentageOfOwnershipInterestDisposed_label_en-US" xlink:label="lab_pre_PercentageOfOwnershipInterestDisposed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Ownership Interest Disposed</link:label>
    <link:label id="lab_pre_PercentageOfOwnershipInterestDisposed_documentation_en-US" xlink:label="lab_pre_PercentageOfOwnershipInterestDisposed" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage Of Ownership Interest Disposed</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PercentageOfOwnershipInterestDisposed" xlink:href="pre-20251231.xsd#pre_PercentageOfOwnershipInterestDisposed"/>
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    <link:label id="lab_pre_GainsLossesOnWarrantExchange_019d0336-120f-747f-8dd0-1e887eda1a9e_terseLabel_en-US" xlink:label="lab_pre_GainsLossesOnWarrantExchange" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on warrant exchange</link:label>
    <link:label id="lab_pre_GainsLossesOnWarrantExchange_019d0351-c4fc-7a51-b8f1-a07d338a63b2_negatedTerseLabel_en-US" xlink:label="lab_pre_GainsLossesOnWarrantExchange" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Warrants exchange</link:label>
    <link:label id="lab_pre_GainsLossesOnWarrantExchange_label_en-US" xlink:label="lab_pre_GainsLossesOnWarrantExchange" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (Losses) On Warrant Exchange</link:label>
    <link:label id="lab_pre_GainsLossesOnWarrantExchange_documentation_en-US" xlink:label="lab_pre_GainsLossesOnWarrantExchange" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gains (Losses) On Warrant Exchange</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_GainsLossesOnWarrantExchange" xlink:href="pre-20251231.xsd#pre_GainsLossesOnWarrantExchange"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_GainsLossesOnWarrantExchange" xlink:to="lab_pre_GainsLossesOnWarrantExchange" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities_683a1bb1-4465-4930-9e51-28605c0b164e_negatedLabel_en-US" xlink:label="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Fair value loss/(gain) on warrant liabilities</link:label>
    <link:label id="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities_label_en-US" xlink:label="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments For Fair Value Gain On Warrant Liabilities</link:label>
    <link:label id="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities_documentation_en-US" xlink:label="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments For Fair Value Gain On Warrant Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentsForFairValueGainOnWarrantLiabilities" xlink:href="pre-20251231.xsd#pre_AdjustmentsForFairValueGainOnWarrantLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AdjustmentsForFairValueGainOnWarrantLiabilities" xlink:to="lab_pre_AdjustmentsForFairValueGainOnWarrantLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests_019d70be-5d54-7cc3-8bb6-d478f9449454_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">(Loss) profit attributable to non-controlling interests from continuing operations attributable to non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests_019d8435-beb2-7c28-9ac0-66142ee23c54_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">- from discontinued operations</link:label>
    <link:label id="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss) from discontinued operations attributable to non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:to="lab_ifrs-full_ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GeographicalAreasAxis_f853dcaa-0ab9-4e53-81c5-992f729bd583_terseLabel_en-US" xlink:label="lab_ifrs-full_GeographicalAreasAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical areas [axis]</link:label>
    <link:label id="lab_ifrs-full_GeographicalAreasAxis_label_en-US" xlink:label="lab_ifrs-full_GeographicalAreasAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical areas [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GeographicalAreasAxis" xlink:to="lab_ifrs-full_GeographicalAreasAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ServicesTransferredAtAPointInTimeMember_fdb49cec-4507-410f-94ae-b343c99ea461_terseLabel_en-US" xlink:label="lab_pre_ServicesTransferredAtAPointInTimeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Services transferred at a point in time</link:label>
    <link:label id="lab_pre_ServicesTransferredAtAPointInTimeMember_label_en-US" xlink:label="lab_pre_ServicesTransferredAtAPointInTimeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Services Transferred at a Point in Time [Member]</link:label>
    <link:label id="lab_pre_ServicesTransferredAtAPointInTimeMember_documentation_en-US" xlink:label="lab_pre_ServicesTransferredAtAPointInTimeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Services Transferred at a Point in Time</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ServicesTransferredAtAPointInTimeMember" xlink:href="pre-20251231.xsd#pre_ServicesTransferredAtAPointInTimeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ServicesTransferredAtAPointInTimeMember" xlink:to="lab_pre_ServicesTransferredAtAPointInTimeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfInterestsInAssociates_e4d3c304-7b12-4c0d-8e18-5e8279b8fdb0_terseLabel_en-US" xlink:label="lab_ifrs-full_PurchaseOfInterestsInAssociates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interests in equity-accounted investees</link:label>
    <link:label id="lab_ifrs-full_PurchaseOfInterestsInAssociates_label_en-US" xlink:label="lab_ifrs-full_PurchaseOfInterestsInAssociates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase of interests in associates</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfInterestsInAssociates" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PurchaseOfInterestsInAssociates"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfInterestsInAssociates" xlink:to="lab_ifrs-full_PurchaseOfInterestsInAssociates" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid_e3b68e72-bc8c-478f-a13f-f0850314f825_periodStartLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at the beginning (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid_49725240-14bd-468e-aa1c-fb7d2a13d394_periodEndLabel_en-US" xlink:label="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at the end (in shares)</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid_label_en-US" xlink:label="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of shares issued and fully paid</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesIssuedAndFullyPaid" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesIssuedAndFullyPaid"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfSharesIssuedAndFullyPaid" xlink:to="lab_ifrs-full_NumberOfSharesIssuedAndFullyPaid" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AlternativeAssetsAmountAbstract_019caede-d330-7230-b2b5-c21a574a311c_terseLabel_en-US" xlink:label="lab_pre_AlternativeAssetsAmountAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount</link:label>
    <link:label id="lab_pre_AlternativeAssetsAmountAbstract_label_en-US" xlink:label="lab_pre_AlternativeAssetsAmountAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Alternative Assets, Amount [Abstract]</link:label>
    <link:label id="lab_pre_AlternativeAssetsAmountAbstract_documentation_en-US" xlink:label="lab_pre_AlternativeAssetsAmountAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Alternative Assets, Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AlternativeAssetsAmountAbstract" xlink:href="pre-20251231.xsd#pre_AlternativeAssetsAmountAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AlternativeAssetsAmountAbstract" xlink:to="lab_pre_AlternativeAssetsAmountAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisclosureOfDigitalAssetsTextBlock_019c6b5b-909e-7bff-9723-ad543c1cfc1c_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfDigitalAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Digital assets</link:label>
    <link:label id="lab_pre_DisclosureOfDigitalAssetsTextBlock_label_en-US" xlink:label="lab_pre_DisclosureOfDigitalAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Digital Assets [Text Block]</link:label>
    <link:label id="lab_pre_DisclosureOfDigitalAssetsTextBlock_documentation_en-US" xlink:label="lab_pre_DisclosureOfDigitalAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Digital Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfDigitalAssetsTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfDigitalAssetsTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfDigitalAssetsTextBlock" xlink:to="lab_pre_DisclosureOfDigitalAssetsTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities_808feccd-1fa3-4768-b1d7-4e3cdbd21702_periodStartLabel_en-US" xlink:label="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning of the period</link:label>
    <link:label id="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities_6cadc310-e13e-41e4-92ef-5901270a5653_periodEndLabel_en-US" xlink:label="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending of the period</link:label>
    <link:label id="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities arising from financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesArisingFromFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:to="lab_ifrs-full_LiabilitiesArisingFromFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestCostsAbstract_ec75a259-d2de-415d-a47e-ea7085b865d7_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestCostsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Continuing operations</link:label>
    <link:label id="lab_ifrs-full_InterestCostsAbstract_label_en-US" xlink:label="lab_ifrs-full_InterestCostsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest costs [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestCostsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestCostsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestCostsAbstract" xlink:to="lab_ifrs-full_InterestCostsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ThirdPartiesMember_14cfb432-8d16-4bea-bd8d-19f565a14151_terseLabel_en-US" xlink:label="lab_pre_ThirdPartiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">RSUs granted to third parties</link:label>
    <link:label id="lab_pre_ThirdPartiesMember_label_en-US" xlink:label="lab_pre_ThirdPartiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Third Parties [Member]</link:label>
    <link:label id="lab_pre_ThirdPartiesMember_documentation_en-US" xlink:label="lab_pre_ThirdPartiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Third Parties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ThirdPartiesMember" xlink:href="pre-20251231.xsd#pre_ThirdPartiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ThirdPartiesMember" xlink:to="lab_pre_ThirdPartiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLeaseLiabilities_7176d7bb-9b8a-45b4-8087-a3ac44dbe4b9_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities - non-current</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLeaseLiabilities_8a03eb8d-c9f2-42d2-abd3-3b47b15cfb08_verboseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities, non-current</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLeaseLiabilities" xlink:to="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory_56f33bae-fe78-4255-96ea-dd17b89a49c8_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory_5b45379b-4f82-4717-b09b-7dc80919ae97_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Contract liabilities</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of revenue from contracts with customers [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:to="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_c889fc6b-a151-48a7-a689-ea4e4c2d3a5c_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding (in shares)</link:label>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding" xlink:to="lab_dei_EntityCommonStockSharesOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_c7c03567-4a17-4140-bfc9-a3c8a6da8558_terseLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_af61ad59-10ef-4603-a865-e8611a547990_periodStartLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_43c04048-bc2b-4d83-91be-b113f0774b4a_periodEndLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentFinStmtErrorCorrectionFlag_f12f1ae3-c7ae-45fc-b636-f8263bc03161_terseLabel_en-US" xlink:label="lab_dei_DocumentFinStmtErrorCorrectionFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Financial Statement Error Correction</link:label>
    <link:label id="lab_dei_DocumentFinStmtErrorCorrectionFlag_label_en-US" xlink:label="lab_dei_DocumentFinStmtErrorCorrectionFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Financial Statement Error Correction [Flag]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFinStmtErrorCorrectionFlag" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFinStmtErrorCorrectionFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFinStmtErrorCorrectionFlag" xlink:to="lab_dei_DocumentFinStmtErrorCorrectionFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable_dc876b76-9d09-43c0-a4fd-a9f99c6f3df9_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of fair value measurement of assets [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value measurement of assets [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:to="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill_9c1a56c4-9694-4dc0-a117-86a498390172_negatedLabel_en-US" xlink:label="lab_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Disposals</link:label>
    <link:label id="lab_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposals, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_OtherLiabilitiesUndiscountedCashFlows_e6e5f47f-2953-4e4b-89c7-170e15dd4393_terseLabel_en-US" xlink:label="lab_pre_OtherLiabilitiesUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_pre_OtherLiabilitiesUndiscountedCashFlows_label_en-US" xlink:label="lab_pre_OtherLiabilitiesUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Undiscounted Cash Flows</link:label>
    <link:label id="lab_pre_OtherLiabilitiesUndiscountedCashFlows_documentation_en-US" xlink:label="lab_pre_OtherLiabilitiesUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Liabilities, Undiscounted Cash Flows</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OtherLiabilitiesUndiscountedCashFlows" xlink:href="pre-20251231.xsd#pre_OtherLiabilitiesUndiscountedCashFlows"/>
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    <link:label id="lab_ifrs-full_SegmentsDomain_a0692b98-f7f5-4c6f-8d4c-5c6d92238599_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [domain]</link:label>
    <link:label id="lab_ifrs-full_SegmentsDomain_label_en-US" xlink:label="lab_ifrs-full_SegmentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SegmentsDomain" xlink:to="lab_ifrs-full_SegmentsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_d49f9a89-1ba1-4342-a99f-5d5a3497531b_terseLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_aadeb2e0-a81c-4cf1-8565-03ff1fbadc90_periodStartLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at the beginning of the year</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_4c74c548-2479-4fe5-b7df-b3e29595fdde_periodEndLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at the end of the year</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_e8788797-b3ec-4840-bdeb-363f7e7b5753_totalLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_label_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashAndCashEquivalents" xlink:to="lab_ifrs-full_CashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_UnallocatedAmountsMember_35f80845-7c3a-422a-a931-e81e8c96d8b1_terseLabel_en-US" xlink:label="lab_ifrs-full_UnallocatedAmountsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unallocated</link:label>
    <link:label id="lab_ifrs-full_UnallocatedAmountsMember_label_en-US" xlink:label="lab_ifrs-full_UnallocatedAmountsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unallocated amounts [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UnallocatedAmountsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnallocatedAmountsMember"/>
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    <link:label id="lab_ifrs-full_ClassesOfOrdinarySharesAxis_18653106-dbc5-4d3c-bc95-89f51b5aef4d_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfOrdinarySharesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of ordinary shares [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfOrdinarySharesAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfOrdinarySharesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of ordinary shares [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfOrdinarySharesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfOrdinarySharesAxis"/>
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    <link:label id="lab_pre_LargestCustomerMember_7290ec1b-29a8-4021-b8c3-3d7f11719896_terseLabel_en-US" xlink:label="lab_pre_LargestCustomerMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Largest customer</link:label>
    <link:label id="lab_pre_LargestCustomerMember_label_en-US" xlink:label="lab_pre_LargestCustomerMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Largest Customer [Member]</link:label>
    <link:label id="lab_pre_LargestCustomerMember_documentation_en-US" xlink:label="lab_pre_LargestCustomerMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Largest Customer</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LargestCustomerMember" xlink:href="pre-20251231.xsd#pre_LargestCustomerMember"/>
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    <link:label id="lab_dei_DocumentInformationTable_2025dc37-43cd-40b7-b73f-a11cc54cebf9_terseLabel_en-US" xlink:label="lab_dei_DocumentInformationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Information [Table]</link:label>
    <link:label id="lab_dei_DocumentInformationTable_label_en-US" xlink:label="lab_dei_DocumentInformationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Information [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentInformationTable" xlink:to="lab_dei_DocumentInformationTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations_019b24d5-c0c9-70f4-89d5-a50e42445bc1_negatedLabel_en-US" xlink:label="lab_ifrs-full_TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax credit</link:label>
    <link:label id="lab_ifrs-full_TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations_label_en-US" xlink:label="lab_ifrs-full_TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax expense (income) relating to profit (loss) from ordinary activities of discontinued operations</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_019cd8a6-b17c-7bde-a48f-d0541f890361_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [line items]</link:label>
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    <link:label id="lab_pre_FairValueAtMeasurementDateSharePriceOtherEquityInstrumentsGranted_a40204c4-9f15-42f3-9998-e7027c65d644_terseLabel_en-US" xlink:label="lab_pre_FairValueAtMeasurementDateSharePriceOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value at measurement date (in US dollar per share)</link:label>
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    <link:label id="lab_pre_FairValueAtMeasurementDateSharePriceOtherEquityInstrumentsGranted_documentation_en-US" xlink:label="lab_pre_FairValueAtMeasurementDateSharePriceOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value At Measurement Date Share Price, Other Equity Instruments Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_FairValueAtMeasurementDateSharePriceOtherEquityInstrumentsGranted" xlink:href="pre-20251231.xsd#pre_FairValueAtMeasurementDateSharePriceOtherEquityInstrumentsGranted"/>
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    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory_244676bf-686f-4965-ad9e-40f2c88b08af_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of transactions with other related parties</link:label>
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    <link:label id="lab_ifrs-full_EquityAndLiabilities_2fca4230-ae9e-48dd-b158-cf805150c3fe_totalLabel_en-US" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total equity and liabilities</link:label>
    <link:label id="lab_ifrs-full_EquityAndLiabilities_label_en-US" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity and liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAndLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAndLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAndLiabilities" xlink:to="lab_ifrs-full_EquityAndLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_country_US_c5863a50-f127-4564-94ac-4e2ed5ca2e79_terseLabel_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">The United States</link:label>
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    <link:label id="lab_pre_AccruedExpensesAndOtherCurrentLiabilitiesAsOfDisposalDate_019c758b-70d5-7e1c-8b14-3d9e39d5dcb3_negatedTerseLabel_en-US" xlink:label="lab_pre_AccruedExpensesAndOtherCurrentLiabilitiesAsOfDisposalDate" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accrued expenses and other current liabilities</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_AccruedExpensesAndOtherCurrentLiabilitiesAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_AccruedExpensesAndOtherCurrentLiabilitiesAsOfDisposalDate"/>
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    <link:label id="lab_ifrs-full_BusinessCombinationsAxis_d823693b-9537-4bdc-ac7e-2da4fe2ce4dc_terseLabel_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business combinations [axis]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
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    <link:label id="lab_ifrs-full_LandAndBuildingsMember_2ebdf461-ea6a-4c92-a36a-f3ebdc7f37de_terseLabel_en-US" xlink:label="lab_ifrs-full_LandAndBuildingsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Properties leased for own use, carried at depreciated cost</link:label>
    <link:label id="lab_ifrs-full_LandAndBuildingsMember_8953169b-b306-45f0-9727-7d240372f1a6_verboseLabel_en-US" xlink:label="lab_ifrs-full_LandAndBuildingsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Properties leased for own use</link:label>
    <link:label id="lab_ifrs-full_LandAndBuildingsMember_label_en-US" xlink:label="lab_ifrs-full_LandAndBuildingsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land and buildings [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LandAndBuildingsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LandAndBuildingsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LandAndBuildingsMember" xlink:to="lab_ifrs-full_LandAndBuildingsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BusinessCombinationsDomain_a819aace-3887-4406-a923-f7269a49c4f1_terseLabel_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business combinations [domain]</link:label>
    <link:label id="lab_ifrs-full_BusinessCombinationsDomain_label_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business combinations [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BusinessCombinationsDomain" xlink:to="lab_ifrs-full_BusinessCombinationsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_WarrantsAfterReverseStockSplitMember_4797002b-e5cb-491f-9e9f-dbb1ad7a493e_terseLabel_en-US" xlink:label="lab_pre_WarrantsAfterReverseStockSplitMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrants after reverse stock split</link:label>
    <link:label id="lab_pre_WarrantsAfterReverseStockSplitMember_label_en-US" xlink:label="lab_pre_WarrantsAfterReverseStockSplitMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrants After Reverse Stock Split [Member]</link:label>
    <link:label id="lab_pre_WarrantsAfterReverseStockSplitMember_documentation_en-US" xlink:label="lab_pre_WarrantsAfterReverseStockSplitMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Warrants After Reverse Stock Split</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_WarrantsAfterReverseStockSplitMember" xlink:href="pre-20251231.xsd#pre_WarrantsAfterReverseStockSplitMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_WarrantsAfterReverseStockSplitMember" xlink:to="lab_pre_WarrantsAfterReverseStockSplitMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DigitalAssetsNumber_019caedc-b12c-7be5-9718-c0658b2d21b8_periodStartLabel_en-US" xlink:label="lab_pre_DigitalAssetsNumber" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at period start (in number of bitcoin)</link:label>
    <link:label id="lab_pre_DigitalAssetsNumber_019caedc-98c7-71ad-a295-21c87fcbdb12_periodEndLabel_en-US" xlink:label="lab_pre_DigitalAssetsNumber" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at period end (in number of bitcoin)</link:label>
    <link:label id="lab_pre_DigitalAssetsNumber_label_en-US" xlink:label="lab_pre_DigitalAssetsNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Digital Assets, Number</link:label>
    <link:label id="lab_pre_DigitalAssetsNumber_documentation_en-US" xlink:label="lab_pre_DigitalAssetsNumber" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Digital Assets, Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DigitalAssetsNumber" xlink:href="pre-20251231.xsd#pre_DigitalAssetsNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DigitalAssetsNumber" xlink:to="lab_pre_DigitalAssetsNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_1c178924-1ac0-40a7-bb2d-51505f94b5fe_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of analysis of single amount of discontinued operations [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of analysis of single amount of discontinued operations [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:to="lab_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities_019d7802-71b4-7636-9a45-7ae2bb32ea6e_terseLabel_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of warrants</link:label>
    <link:label id="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities_label_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase Decrease Through New Issuance Of Warrants, Liabilities Arising From Financing Activities</link:label>
    <link:label id="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities_documentation_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase Decrease Through New Issuance Of Warrants, Liabilities Arising From Financing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities" xlink:href="pre-20251231.xsd#pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities" xlink:to="lab_pre_IncreaseDecreaseThroughNewIssuanceOfWarrantsLiabilitiesArisingFromFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AlternativeAssetsAbstract_label_en-US" xlink:label="lab_pre_AlternativeAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Alternative Assets [Abstract]</link:label>
    <link:label id="lab_pre_AlternativeAssetsAbstract_documentation_en-US" xlink:label="lab_pre_AlternativeAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Alternative Assets [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AlternativeAssetsAbstract" xlink:href="pre-20251231.xsd#pre_AlternativeAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AlternativeAssetsAbstract" xlink:to="lab_pre_AlternativeAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities_8a041046-84c7-4a81-b69e-38d1cc936154_verboseLabel_en-US" xlink:label="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Increase/(decrease) in accrued expenses and other current liabilities</link:label>
    <link:label id="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities_label_en-US" xlink:label="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments For Increase Decrease In Accrued Expenses And Other Current Liabilities</link:label>
    <link:label id="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities_documentation_en-US" xlink:label="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments For Increase Decrease In Accrued Expenses And Other Current Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities" xlink:href="pre-20251231.xsd#pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities" xlink:to="lab_pre_AdjustmentsForIncreaseDecreaseInAccruedExpensesAndOtherCurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ProductsAndServicesDomain_019db7c3-d583-7cc8-aa8f-b0b290e0c773_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductsAndServicesDomain" xlink:to="lab_srt_ProductsAndServicesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations_4cccfcd3-12ae-46e8-90c2-53601ae26fb7_verboseLabel_en-US" xlink:label="lab_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Revenue to be recognized in within one year</link:label>
    <link:label id="lab_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations_label_en-US" xlink:label="lab_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transaction price allocated to remaining performance obligations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:to="lab_ifrs-full_TransactionPriceAllocatedToRemainingPerformanceObligations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RawMaterialsAndConsumablesUsed_a9db7c6c-3ba2-4ab3-a038-f66335326d6b_verboseLabel_en-US" xlink:label="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cost of inventories</link:label>
    <link:label id="lab_ifrs-full_RawMaterialsAndConsumablesUsed_830b24f1-96df-4136-a8f0-b64efd09b5bc_terseLabel_en-US" xlink:label="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Raw materials and consumables used</link:label>
    <link:label id="lab_ifrs-full_RawMaterialsAndConsumablesUsed_label_en-US" xlink:label="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Raw materials and consumables used</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RawMaterialsAndConsumablesUsed"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:to="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_InsightaMember_0ca3ab31-ac7e-4765-8035-f12f67fdbdb4_terseLabel_en-US" xlink:label="lab_pre_InsightaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insighta</link:label>
    <link:label id="lab_pre_InsightaMember_label_en-US" xlink:label="lab_pre_InsightaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insighta [Member]</link:label>
    <link:label id="lab_pre_InsightaMember_documentation_en-US" xlink:label="lab_pre_InsightaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Insighta</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_InsightaMember" xlink:href="pre-20251231.xsd#pre_InsightaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_InsightaMember" xlink:to="lab_pre_InsightaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestRateMeasurementInputMember_019d2775-2e52-776b-a5ce-50e6dcd974dd_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Risk-free interest rate</link:label>
    <link:label id="lab_ifrs-full_InterestRateMeasurementInputMember_label_en-US" xlink:label="lab_ifrs-full_InterestRateMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest rate, measurement input [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestRateMeasurementInputMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestRateMeasurementInputMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestRateMeasurementInputMember" xlink:to="lab_ifrs-full_InterestRateMeasurementInputMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_BitcoinMember_019ce1b3-fb45-747a-9b0f-eddfe26975c3_terseLabel_en-US" xlink:label="lab_pre_BitcoinMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Digital assets - Bitcoin</link:label>
    <link:label id="lab_pre_BitcoinMember_label_en-US" xlink:label="lab_pre_BitcoinMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bitcoin [Member]</link:label>
    <link:label id="lab_pre_BitcoinMember_documentation_en-US" xlink:label="lab_pre_BitcoinMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bitcoin</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_BitcoinMember" xlink:href="pre-20251231.xsd#pre_BitcoinMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_BitcoinMember" xlink:to="lab_pre_BitcoinMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate_019c7516-eb6b-7d2d-84cb-48ed9451f0c1_terseLabel_en-US" xlink:label="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate_label_en-US" xlink:label="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Plant and Equipment as of Disposal Date</link:label>
    <link:label id="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Property Plant and Equipment as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PropertyPlantAndEquipmentAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_PropertyPlantAndEquipmentAsOfDisposalDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_PropertyPlantAndEquipmentAsOfDisposalDate" xlink:to="lab_pre_PropertyPlantAndEquipmentAsOfDisposalDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable_6e0b8f01-f316-4e54-839f-779768d78991_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of attribution of expenses by nature to their function [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of attribution of expenses by nature to their function [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:to="lab_ifrs-full_DisclosureOfAttributionOfExpensesByNatureToTheirFunctionTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_JointVenturesDomain_4f96bd56-9911-49b7-adf4-04de64ec4ec5_terseLabel_en-US" xlink:label="lab_ifrs-full_JointVenturesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Joint ventures [domain]</link:label>
    <link:label id="lab_ifrs-full_JointVenturesDomain_label_en-US" xlink:label="lab_ifrs-full_JointVenturesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Joint ventures [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointVenturesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointVenturesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_JointVenturesDomain" xlink:to="lab_ifrs-full_JointVenturesDomain" xlink:type="arc" order="1"/>
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    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory_8d52c7cd-d296-4460-8a4d-80a7444cd1e6_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of intangible assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory"/>
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    <link:label id="lab_ifrs-full_Level3OfFairValueHierarchyMember_882be2e7-61fb-4191-95e8-102fd45c5298_terseLabel_en-US" xlink:label="lab_ifrs-full_Level3OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level 3</link:label>
    <link:label id="lab_ifrs-full_Level3OfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_Level3OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Level 3 of fair value hierarchy [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level3OfFairValueHierarchyMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level3OfFairValueHierarchyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Level3OfFairValueHierarchyMember" xlink:to="lab_ifrs-full_Level3OfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_MovementInContractLiabilitiesAbstract_a74a05e0-44ec-4928-b249-7a69dab6c09d_terseLabel_en-US" xlink:label="lab_pre_MovementInContractLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Movement in contract liabilities</link:label>
    <link:label id="lab_pre_MovementInContractLiabilitiesAbstract_label_en-US" xlink:label="lab_pre_MovementInContractLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Movement In Contract Liabilities [Abstract]</link:label>
    <link:label id="lab_pre_MovementInContractLiabilitiesAbstract_documentation_en-US" xlink:label="lab_pre_MovementInContractLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Movement In Contract Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_MovementInContractLiabilitiesAbstract" xlink:href="pre-20251231.xsd#pre_MovementInContractLiabilitiesAbstract"/>
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    <link:label id="lab_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets_70f78bc0-6929-4cc5-a305-efcc2e176519_negatedLabel_en-US" xlink:label="lab_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Disposals</link:label>
    <link:label id="lab_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets_label_en-US" xlink:label="lab_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposals, property, plant and equipment including right-of-use assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:to="lab_ifrs-full_DisposalsPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_63449404-232b-4b6c-84d9-a21a458af01c_terseLabel_en-US" xlink:label="lab_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions from acquisition</link:label>
    <link:label id="lab_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisitions through business combinations, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_AcquisitionsThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_4d039798-e80e-4255-ad99-14318b552408_verboseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest expenses on lease liabilities</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_e6856aba-0e6a-46a0-8815-691e319e8cd3_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest on lease liabilities (notes 8(a) and 10(c))</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest expense on lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpenseOnLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:to="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_0bf11cc7-7f39-4763-858c-6cf242a3de50_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Key sources of estimation uncertainty</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of accounting judgements and estimates [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ExercisePriceOtherEquityInstrumentsGranted_332b5d00-2e12-4fe0-b63a-beaff82b6a52_terseLabel_en-US" xlink:label="lab_pre_ExercisePriceOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercise price (in US dollar per share)</link:label>
    <link:label id="lab_pre_ExercisePriceOtherEquityInstrumentsGranted_label_en-US" xlink:label="lab_pre_ExercisePriceOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price, Other Equity Instruments Granted</link:label>
    <link:label id="lab_pre_ExercisePriceOtherEquityInstrumentsGranted_documentation_en-US" xlink:label="lab_pre_ExercisePriceOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exercise Price, Other Equity Instruments Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ExercisePriceOtherEquityInstrumentsGranted" xlink:href="pre-20251231.xsd#pre_ExercisePriceOtherEquityInstrumentsGranted"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ExercisePriceOtherEquityInstrumentsGranted" xlink:to="lab_pre_ExercisePriceOtherEquityInstrumentsGranted" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfClassesOfShareCapitalTable_4b992596-6ab7-426d-bd2c-fb7427800102_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of classes of share capital [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfClassesOfShareCapitalTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of classes of share capital [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:to="lab_ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_UnobservableInputsAxis_8dc431a6-5251-44ed-9f36-aad39551b8ff_terseLabel_en-US" xlink:label="lab_ifrs-full_UnobservableInputsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unobservable inputs [axis]</link:label>
    <link:label id="lab_ifrs-full_UnobservableInputsAxis_label_en-US" xlink:label="lab_ifrs-full_UnobservableInputsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unobservable inputs [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UnobservableInputsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnobservableInputsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_UnobservableInputsAxis" xlink:to="lab_ifrs-full_UnobservableInputsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AuditorName_152cea2a-8575-49e9-89b7-93b3612f2af2_terseLabel_en-US" xlink:label="lab_dei_AuditorName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Auditor Name</link:label>
    <link:label id="lab_dei_AuditorName_label_en-US" xlink:label="lab_dei_AuditorName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorName" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorName" xlink:to="lab_dei_AuditorName" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod_d994fec3-1a3f-40ee-b747-cd7a7a0a387d_terseLabel_en-US" xlink:label="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of interest retained - 35%</link:label>
    <link:label id="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod_label_en-US" xlink:label="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Of Investments In Associates Accounted For Using Equity Method</link:label>
    <link:label id="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod_documentation_en-US" xlink:label="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Of Investments In Associates Accounted For Using Equity Method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod" xlink:href="pre-20251231.xsd#pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod" xlink:to="lab_pre_FairValueOfInvestmentsInAssociatesAccountedForUsingEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DecreaseThroughWriteoffFinancialAssets_649e3989-2f96-4956-b9ea-099acc060905_terseLabel_en-US" xlink:label="lab_ifrs-full_DecreaseThroughWriteoffFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amounts written off</link:label>
    <link:label id="lab_ifrs-full_DecreaseThroughWriteoffFinancialAssets_label_en-US" xlink:label="lab_ifrs-full_DecreaseThroughWriteoffFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease through write-off, financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DecreaseThroughWriteoffFinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DecreaseThroughWriteoffFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DecreaseThroughWriteoffFinancialAssets" xlink:to="lab_ifrs-full_DecreaseThroughWriteoffFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_bc652484-fabd-49de-9bc9-a007bb882c8d_terseLabel_en-US" xlink:label="lab_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate continuing and discontinued operations</link:label>
    <link:label id="lab_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_label_en-US" xlink:label="lab_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate continuing and discontinued operations [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember" xlink:to="lab_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsDomain_c2cb286c-3251-47f9-bd43-370b3c100075_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment consolidation items [domain]</link:label>
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    <link:label id="lab_pre_CashAndCashEquivalentAsOfDisposalDate_019c753a-783d-7d53-8bde-c77198162039_terseLabel_en-US" xlink:label="lab_pre_CashAndCashEquivalentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_pre_CashAndCashEquivalentAsOfDisposalDate_label_en-US" xlink:label="lab_pre_CashAndCashEquivalentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalent as of Disposal Date</link:label>
    <link:label id="lab_pre_CashAndCashEquivalentAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_CashAndCashEquivalentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalent as of Disposal Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_CashAndCashEquivalentAsOfDisposalDate" xlink:href="pre-20251231.xsd#pre_CashAndCashEquivalentAsOfDisposalDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_CashAndCashEquivalentAsOfDisposalDate" xlink:to="lab_pre_CashAndCashEquivalentAsOfDisposalDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_d22f1050-5347-4479-adb4-7be3197ea067_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems"/>
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    <link:label id="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_c2045e8c-1863-4950-87c8-ae4afe83cd52_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade and other receivables and deferred expenses</link:label>
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    <link:label id="lab_pre_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_documentation_en-US" xlink:label="lab_pre_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Fair Value Measurement Of Assets And Liabilities</link:label>
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    <link:label id="lab_pre_ConsumerHealthMember_8b1100cc-5e84-4c3f-912a-b2f73f6ebb34_terseLabel_en-US" xlink:label="lab_pre_ConsumerHealthMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consumer Health</link:label>
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    <link:label id="lab_ifrs-full_MiscellaneousEquityAbstract_label_en-US" xlink:label="lab_ifrs-full_MiscellaneousEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Miscellaneous equity [abstract]</link:label>
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    <link:label id="lab_ifrs-full_GoodwillMember_019ce170-2df9-7979-b4e4-86438684c11d_terseLabel_en-US" xlink:label="lab_ifrs-full_GoodwillMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
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    <link:label id="lab_pre_OtherFinanceCostMember_documentation_en-US" xlink:label="lab_pre_OtherFinanceCostMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Finance Cost</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_b227208d-6aa9-4f3d-b540-869bfe7b1e4c_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in operating activities</link:label>
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    <link:label id="lab_ifrs-full_FinishedGoods_d86c93e7-dff2-4e62-bea4-2c7b63d2bfe9_terseLabel_en-US" xlink:label="lab_ifrs-full_FinishedGoods" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finished goods</link:label>
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    <link:label id="lab_pre_DisclosureOfNonControllingInterestsForContinuingAndDiscontinuedOperationsTableTextBlock_019d70b9-63e1-7b0d-b0e5-6fa9bab9a3ee_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfNonControllingInterestsForContinuingAndDiscontinuedOperationsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of non-controlling interests for continuing and discontinued operations</link:label>
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    <link:label id="lab_pre_GeneralInformationAboutReportingEntityLineItems_30ef872c-18df-441d-a0c7-cba0a0ba4de9_terseLabel_en-US" xlink:label="lab_pre_GeneralInformationAboutReportingEntityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General Information About Reporting Entity [line items]</link:label>
    <link:label id="lab_pre_GeneralInformationAboutReportingEntityLineItems_label_en-US" xlink:label="lab_pre_GeneralInformationAboutReportingEntityLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General Information About Reporting Entity [Line Items]</link:label>
    <link:label id="lab_pre_GeneralInformationAboutReportingEntityLineItems_documentation_en-US" xlink:label="lab_pre_GeneralInformationAboutReportingEntityLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">General Information About Reporting Entity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_GeneralInformationAboutReportingEntityLineItems" xlink:href="pre-20251231.xsd#pre_GeneralInformationAboutReportingEntityLineItems"/>
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    <link:label id="lab_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory_a17f4d6f-3b96-40c7-a57d-657aa03714ff_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interests in equity-accounted investees</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of interests in other entities [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory"/>
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    <link:label id="lab_pre_OxsedLimitedMember_622c6e61-7f26-4704-9883-cb9d7907718e_terseLabel_en-US" xlink:label="lab_pre_OxsedLimitedMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Oxsed Limited</link:label>
    <link:label id="lab_pre_OxsedLimitedMember_label_en-US" xlink:label="lab_pre_OxsedLimitedMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oxsed Limited [Member]</link:label>
    <link:label id="lab_pre_OxsedLimitedMember_documentation_en-US" xlink:label="lab_pre_OxsedLimitedMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Oxsed Limited</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OxsedLimitedMember" xlink:href="pre-20251231.xsd#pre_OxsedLimitedMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_OxsedLimitedMember" xlink:to="lab_pre_OxsedLimitedMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLiabilitiesAbstract_59c62370-2a9e-42be-aeaf-b9197ef04840_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-current</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ConsiderationRefundablePeriodFromDateOfDeliveryServicesUpfront_e0367d67-e2de-4661-a1c1-642b4846b610_terseLabel_en-US" xlink:label="lab_pre_ConsiderationRefundablePeriodFromDateOfDeliveryServicesUpfront" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consideration refundable period from the date of delivery, services upfront</link:label>
    <link:label id="lab_pre_ConsiderationRefundablePeriodFromDateOfDeliveryServicesUpfront_label_en-US" xlink:label="lab_pre_ConsiderationRefundablePeriodFromDateOfDeliveryServicesUpfront" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consideration Refundable Period From Date Of Delivery Services Upfront</link:label>
    <link:label id="lab_pre_ConsiderationRefundablePeriodFromDateOfDeliveryServicesUpfront_documentation_en-US" xlink:label="lab_pre_ConsiderationRefundablePeriodFromDateOfDeliveryServicesUpfront" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Consideration Refundable Period From Date Of Delivery Services Upfront</link:label>
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    <link:label id="lab_dei_EntityDomain_c70e802c-4663-40f8-857a-ee08d8dce886_terseLabel_en-US" xlink:label="lab_dei_EntityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:label id="lab_dei_EntityDomain_label_en-US" xlink:label="lab_dei_EntityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain" xlink:to="lab_dei_EntityDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory_ac1ec3a9-b302-49f1-b99a-951609d61596_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity-settled share-based transactions</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of share-based payment arrangements [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MiscellaneousOtherOperatingIncome_f32262f1-f820-4bac-9c4b-9f937e404b69_verboseLabel_en-US" xlink:label="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sundry income</link:label>
    <link:label id="lab_ifrs-full_MiscellaneousOtherOperatingIncome_cb0ab387-e5dd-4641-9650-0da4a03df38b_terseLabel_en-US" xlink:label="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sundry income</link:label>
    <link:label id="lab_ifrs-full_MiscellaneousOtherOperatingIncome_label_en-US" xlink:label="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Miscellaneous other operating income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:to="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract_0df33ff4-0883-4fd8-906b-7cf21877341e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsAbstract"/>
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    <link:label id="lab_pre_OptionSchemesMember_839d7589-1e09-47ee-923c-c9ba17b6aa0a_terseLabel_en-US" xlink:label="lab_pre_OptionSchemesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share options</link:label>
    <link:label id="lab_pre_OptionSchemesMember_label_en-US" xlink:label="lab_pre_OptionSchemesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Option Schemes [Member]</link:label>
    <link:label id="lab_pre_OptionSchemesMember_documentation_en-US" xlink:label="lab_pre_OptionSchemesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Option Schemes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_OptionSchemesMember" xlink:href="pre-20251231.xsd#pre_OptionSchemesMember"/>
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    <link:label id="lab_pre_DepositsAndOtherReceivablesMember_f00a2542-0952-4c9c-bb92-53721768c53a_terseLabel_en-US" xlink:label="lab_pre_DepositsAndOtherReceivablesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deposits and other receivables</link:label>
    <link:label id="lab_pre_DepositsAndOtherReceivablesMember_label_en-US" xlink:label="lab_pre_DepositsAndOtherReceivablesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deposits And Other Receivables [Member]</link:label>
    <link:label id="lab_pre_DepositsAndOtherReceivablesMember_documentation_en-US" xlink:label="lab_pre_DepositsAndOtherReceivablesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deposits And Other Receivables</link:label>
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    <link:label id="lab_dei_DocumentFiscalYearFocus_2985617f-e3ef-4ec1-8cf7-7e6b7a8b03ee_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract_4b60469d-a49c-48a9-8492-cf44189b2cc0_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments for:</link:label>
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    <link:label id="lab_pre_ScheduleOfExpensesByNatureTable_15c48071-05b1-49fb-a2cc-922b291a5b54_terseLabel_en-US" xlink:label="lab_pre_ScheduleOfExpensesByNatureTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Expenses by Nature [Table]</link:label>
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    <link:label id="lab_pre_DisclosureOfGainOnDisposalOfASubsidiaryTextBlock_019c74e3-a679-7223-b146-e20816a70ec7_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfGainOnDisposalOfASubsidiaryTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of gain on disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_AdministrativeAndOtherOperatingExpensesMember_05e81442-454d-41d7-af09-6607e35014e0_terseLabel_en-US" xlink:label="lab_pre_AdministrativeAndOtherOperatingExpensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Administrative and other operating expenses</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems_5068d661-0cbf-4ffb-88af-7486f5d58db2_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of maturity analysis for non-derivative financial liabilities [line items]</link:label>
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    <link:label id="lab_pre_AlternativeAssetsRollForward_019caed5-2fe5-76fa-bc3e-9fdab325ed5d_terseLabel_en-US" xlink:label="lab_pre_AlternativeAssetsRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternative Assets [Roll Forward]</link:label>
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    <link:label id="lab_ifrs-full_MotorVehiclesMember_1d931d16-efd5-46ad-824d-f99811db2db9_terseLabel_en-US" xlink:label="lab_ifrs-full_MotorVehiclesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Motor vehicles</link:label>
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    <link:label id="lab_pre_ExercisePriceMeasurementInputMember_label_en-US" xlink:label="lab_pre_ExercisePriceMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price, Measurement Input [Member]</link:label>
    <link:label id="lab_pre_ExercisePriceMeasurementInputMember_documentation_en-US" xlink:label="lab_pre_ExercisePriceMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exercise Price, Measurement Input</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ExercisePriceMeasurementInputMember" xlink:href="pre-20251231.xsd#pre_ExercisePriceMeasurementInputMember"/>
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    <link:label id="lab_pre_PriceOfShare_documentation_en-US" xlink:label="lab_pre_PriceOfShare" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Price Of Share</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PriceOfShare" xlink:href="pre-20251231.xsd#pre_PriceOfShare"/>
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    <link:label id="lab_ifrs-full_OtherIncome_7d67470a-e1c2-477c-a31b-d1870c2e99b4_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_TimeToLiquidityEvent" xlink:href="pre-20251231.xsd#pre_TimeToLiquidityEvent"/>
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    <link:label id="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_54b8b991-edca-4305-a019-ffbb9aa0f51b_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade payables</link:label>
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    <link:label id="lab_pre_IncreaseDecreaseThroughPublicPlacementEquity_019c6b8e-f74a-7c35-9b18-92a4297f30f1_terseLabel_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughPublicPlacementEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares issued for public placement</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ExpenseRelatingToShortTermLeasesOrLeasesOfLowValueAssetsForWhichRecognitionExemptionHasBeenUsed" xlink:to="lab_pre_ExpenseRelatingToShortTermLeasesOrLeasesOfLowValueAssetsForWhichRecognitionExemptionHasBeenUsed" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfEarningsPerShareExplanatory_425b6eb8-52f9-44b6-9071-6da15add6895_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loss per share</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfEarningsPerShareExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of earnings per share [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEarningsPerShareExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:to="lab_ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GrossCarryingAmountMember_2d37ea1c-614c-4b28-a0a9-17cf15ec2396_terseLabel_en-US" xlink:label="lab_ifrs-full_GrossCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost:</link:label>
    <link:label id="lab_ifrs-full_GrossCarryingAmountMember_label_en-US" xlink:label="lab_ifrs-full_GrossCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross carrying amount [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossCarryingAmountMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GrossCarryingAmountMember" xlink:to="lab_ifrs-full_GrossCarryingAmountMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_BreakageRevenueFromUnreturnedKits_c1307d59-8c0c-48a6-b0ae-a99c29768919_terseLabel_en-US" xlink:label="lab_pre_BreakageRevenueFromUnreturnedKits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Breakage revenue from unreturned kits</link:label>
    <link:label id="lab_pre_BreakageRevenueFromUnreturnedKits_label_en-US" xlink:label="lab_pre_BreakageRevenueFromUnreturnedKits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Breakage Revenue From Unreturned Kits</link:label>
    <link:label id="lab_pre_BreakageRevenueFromUnreturnedKits_documentation_en-US" xlink:label="lab_pre_BreakageRevenueFromUnreturnedKits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Breakage Revenue From Unreturned Kits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_BreakageRevenueFromUnreturnedKits" xlink:href="pre-20251231.xsd#pre_BreakageRevenueFromUnreturnedKits"/>
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    <link:label id="lab_pre_IM8USLLCMember_5ce809d2-855f-48b6-8470-f5e7918329d1_terseLabel_en-US" xlink:label="lab_pre_IM8USLLCMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">IM8 (US) LLC</link:label>
    <link:label id="lab_pre_IM8USLLCMember_label_en-US" xlink:label="lab_pre_IM8USLLCMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">IM8 US LLC [Member]</link:label>
    <link:label id="lab_pre_IM8USLLCMember_documentation_en-US" xlink:label="lab_pre_IM8USLLCMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">IM8 US LLC</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IM8USLLCMember" xlink:href="pre-20251231.xsd#pre_IM8USLLCMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IM8USLLCMember" xlink:to="lab_pre_IM8USLLCMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ValueOfSharesAbstract_019ce2ea-23c0-7e28-8ec2-925e5aab6f1d_terseLabel_en-US" xlink:label="lab_pre_ValueOfSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Value of Shares [Abstract]</link:label>
    <link:label id="lab_pre_ValueOfSharesAbstract_label_en-US" xlink:label="lab_pre_ValueOfSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Value of Shares [Abstract]</link:label>
    <link:label id="lab_pre_ValueOfSharesAbstract_documentation_en-US" xlink:label="lab_pre_ValueOfSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Value of Shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ValueOfSharesAbstract" xlink:href="pre-20251231.xsd#pre_ValueOfSharesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ValueOfSharesAbstract" xlink:to="lab_pre_ValueOfSharesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ApplicableTaxRate_db3ae26f-d5a3-4bdd-a3fb-9cc15d279d91_terseLabel_en-US" xlink:label="lab_ifrs-full_ApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Applicable tax rate (%)</link:label>
    <link:label id="lab_ifrs-full_ApplicableTaxRate_label_en-US" xlink:label="lab_ifrs-full_ApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Applicable tax rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ApplicableTaxRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ApplicableTaxRate"/>
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    <link:label id="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted_dcef84e6-dd8d-41fa-8d1a-ead1e653ee36_terseLabel_en-US" xlink:label="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected volatility</link:label>
    <link:label id="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted_label_en-US" xlink:label="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Volatility, Other Equity Instruments Granted</link:label>
    <link:label id="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted_documentation_en-US" xlink:label="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Volatility, Other Equity Instruments Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:href="pre-20251231.xsd#pre_ExpectedVolatilityOtherEquityInstrumentsGranted"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:to="lab_pre_ExpectedVolatilityOtherEquityInstrumentsGranted" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInventoriesExplanatory_00582371-a9bf-4e2b-b209-cc5057e7f013_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInventoriesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of inventories [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInventoriesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_PlanName1Domain_7caa7b1c-817a-44c1-9643-cd0b8c0e7563_terseLabel_en-US" xlink:label="lab_pre_PlanName1Domain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:label id="lab_pre_PlanName1Domain_label_en-US" xlink:label="lab_pre_PlanName1Domain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name1 [Domain]</link:label>
    <link:label id="lab_pre_PlanName1Domain_documentation_en-US" xlink:label="lab_pre_PlanName1Domain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan Name1</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PlanName1Domain" xlink:href="pre-20251231.xsd#pre_PlanName1Domain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_PlanName1Domain" xlink:to="lab_pre_PlanName1Domain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities_9fa1a516-ee4b-4326-b0d1-a147d7ffafcf_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase/(decrease) in other non-current liabilities</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for increase (decrease) in other liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities" xlink:to="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInOtherLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory_c9b42099-ca3c-4dae-bca8-aa640386cbe5_verboseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for intangible assets and goodwill [text block]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisclosureOfWarrantyLiabilitiesTable_413876a7-279f-4fbf-bbb4-6e1201e2aca2_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfWarrantyLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Warranty Liabilities [Table]</link:label>
    <link:label id="lab_pre_DisclosureOfWarrantyLiabilitiesTable_label_en-US" xlink:label="lab_pre_DisclosureOfWarrantyLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Warranty Liabilities [Table]</link:label>
    <link:label id="lab_pre_DisclosureOfWarrantyLiabilitiesTable_documentation_en-US" xlink:label="lab_pre_DisclosureOfWarrantyLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Warranty Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfWarrantyLiabilitiesTable" xlink:href="pre-20251231.xsd#pre_DisclosureOfWarrantyLiabilitiesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfWarrantyLiabilitiesTable" xlink:to="lab_pre_DisclosureOfWarrantyLiabilitiesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_LocalPhoneNumber_7a58addb-22c8-40fe-826b-a198b7f74097_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:label id="lab_dei_LocalPhoneNumber_label_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
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    <link:label id="lab_ifrs-full_NotLaterThanOneYearMember_79a3c3d7-7698-4e8a-be7a-23b2af5f2dad_terseLabel_en-US" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Within 1 year</link:label>
    <link:label id="lab_ifrs-full_NotLaterThanOneYearMember_label_en-US" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Not later than one year [member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NotLaterThanOneYearMember" xlink:to="lab_ifrs-full_NotLaterThanOneYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock_019caed2-d882-71e8-a419-d0530b4182e0_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Movement in Digital Assets Holdings</link:label>
    <link:label id="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock_label_en-US" xlink:label="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Reconciliation Of Changes In Digital Assets [Text Block]</link:label>
    <link:label id="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock_documentation_en-US" xlink:label="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crypto Currency Asset, Activity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock" xlink:to="lab_pre_DisclosureOfReconciliationOfChangesInDigitalAssetsTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_d259b019-9756-4ab6-be46-299d83633a92_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:to="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DividendYieldMeasurementInputMember_019d2775-fd7c-7f89-a9c4-651bee1c2c56_terseLabel_en-US" xlink:label="lab_pre_DividendYieldMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividend yield</link:label>
    <link:label id="lab_pre_DividendYieldMeasurementInputMember_label_en-US" xlink:label="lab_pre_DividendYieldMeasurementInputMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend Yield, Measurement Input [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_DividendYieldMeasurementInputMember" xlink:href="pre-20251231.xsd#pre_DividendYieldMeasurementInputMember"/>
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    <link:label id="lab_pre_KMPGMember_493dd424-be68-4f5a-bcde-a4ef86069e55_terseLabel_en-US" xlink:label="lab_pre_KMPGMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">KMPG</link:label>
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    <link:label id="lab_pre_KMPGMember_documentation_en-US" xlink:label="lab_pre_KMPGMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">KMPG</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_KMPGMember" xlink:href="pre-20251231.xsd#pre_KMPGMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_KMPGMember" xlink:to="lab_pre_KMPGMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_5315ec7b-388c-4873-b240-cb17637b9bd4_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities measured at fair value</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities at fair value through profit or loss, category [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:to="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AuditorsRemuneration_2c3ddc90-2315-425c-ace2-09ae0f8ac2a7_verboseLabel_en-US" xlink:label="lab_ifrs-full_AuditorsRemuneration" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Auditor&#8217;s remuneration</link:label>
    <link:label id="lab_ifrs-full_AuditorsRemuneration_c910cb1f-971f-484c-a83a-3fe441afcfc7_terseLabel_en-US" xlink:label="lab_ifrs-full_AuditorsRemuneration" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Auditor&#8217;s remuneration</link:label>
    <link:label id="lab_ifrs-full_AuditorsRemuneration_label_en-US" xlink:label="lab_ifrs-full_AuditorsRemuneration" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor's remuneration</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AuditorsRemuneration" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AuditorsRemuneration"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AuditorsRemuneration" xlink:to="lab_ifrs-full_AuditorsRemuneration" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_9013a5f2-251b-4b75-a32f-cc1963a89d95_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">(Increase)/decrease in inventories</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for decrease (increase) in inventories</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:to="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashTransferred_12a0abce-f1c3-4678-bcd4-bfbd87d56024_terseLabel_en-US" xlink:label="lab_ifrs-full_CashTransferred" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash consideration</link:label>
    <link:label id="lab_ifrs-full_CashTransferred_label_en-US" xlink:label="lab_ifrs-full_CashTransferred" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash transferred</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashTransferred" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashTransferred"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashTransferred" xlink:to="lab_ifrs-full_CashTransferred" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialAssetsLineItems_2396deaa-6cc3-4406-bcba-a1c1a1829f3b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of financial assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of financial assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:to="lab_ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentMember_6dfa97c1-8362-474e-83f0-88ddcd57217d_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentMember_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentMember" xlink:to="lab_ifrs-full_PropertyPlantAndEquipmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory_4b9957f8-de44-4209-8edd-59d93bcc4394_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for property, plant and equipment [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_25eb24db-2b63-4999-9863-48d668a5793c_terseLabel_en-US" xlink:label="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consideration transferred</link:label>
    <link:label id="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_28dba66a-fa0d-4ac5-bc2c-6ef34bc9301f_verboseLabel_en-US" xlink:label="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total cash consideration transferred</link:label>
    <link:label id="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_label_en-US" xlink:label="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consideration transferred, acquisition-date fair value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:to="lab_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_bb26398a-5dce-413a-a155-f49a9c995279_negatedLabel_en-US" xlink:label="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Within financing cash flows</link:label>
    <link:label id="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of lease liabilities, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityVoluntaryFilers_5b1e55ec-6152-4583-967f-678462866d2e_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:label id="lab_dei_EntityVoluntaryFilers_label_en-US" xlink:label="lab_dei_EntityVoluntaryFilers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityVoluntaryFilers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityVoluntaryFilers" xlink:to="lab_dei_EntityVoluntaryFilers" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_WebsiteAndMobileAppsMember_67c7b94c-4e67-4030-9d2c-4015c047a3bf_terseLabel_en-US" xlink:label="lab_pre_WebsiteAndMobileAppsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Website and mobile apps</link:label>
    <link:label id="lab_pre_WebsiteAndMobileAppsMember_label_en-US" xlink:label="lab_pre_WebsiteAndMobileAppsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Website And Mobile Apps [Member]</link:label>
    <link:label id="lab_pre_WebsiteAndMobileAppsMember_documentation_en-US" xlink:label="lab_pre_WebsiteAndMobileAppsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Website And Mobile Apps</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_WebsiteAndMobileAppsMember" xlink:href="pre-20251231.xsd#pre_WebsiteAndMobileAppsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_WebsiteAndMobileAppsMember" xlink:to="lab_pre_WebsiteAndMobileAppsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfBusinessCombinationsExplanatory_3a437435-bb56-4917-aba0-7f8f719e184c_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition of a subsidiary</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfBusinessCombinationsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of business combinations [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities_019d7802-f914-76e7-89e1-bf864041b003_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value (gain) loss on warrant liabilities</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) through changes in fair values, liabilities arising from financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities" xlink:to="lab_ifrs-full_IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_940f65e4-f829-4a6d-b717-ce1c07e18e17_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Directly</link:label>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_label_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of ownership interest in subsidiary</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:to="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock_019cfe2a-705b-75ce-b33a-ca7f423bb2f2_terseLabel_en-US" xlink:label="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Digital assets</link:label>
    <link:label id="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock_label_en-US" xlink:label="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description Of Accounting Policy For Digital Assets [Policy Text Block]</link:label>
    <link:label id="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock_documentation_en-US" xlink:label="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Description Of Accounting Policy For Digital Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock" xlink:href="pre-20251231.xsd#pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock" xlink:to="lab_pre_DescriptionOfAccountingPolicyForDigitalAssetsPolicyTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisposalOfMajorSubsidiaryMember_019ce4ca-47e0-7e81-8cd7-d3f4a0108d86_terseLabel_en-US" xlink:label="lab_ifrs-full_DisposalOfMajorSubsidiaryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal of major subsidiary</link:label>
    <link:label id="lab_ifrs-full_DisposalOfMajorSubsidiaryMember_label_en-US" xlink:label="lab_ifrs-full_DisposalOfMajorSubsidiaryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal of major subsidiary [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalOfMajorSubsidiaryMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalOfMajorSubsidiaryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisposalOfMajorSubsidiaryMember" xlink:to="lab_ifrs-full_DisposalOfMajorSubsidiaryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_LiabilitiesUndiscountedCashFlows_62ebd390-e395-406b-8bde-ac4a4cd5e3ae_totalLabel_en-US" xlink:label="lab_pre_LiabilitiesUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Liabilities, undiscounted cash flows</link:label>
    <link:label id="lab_pre_LiabilitiesUndiscountedCashFlows_label_en-US" xlink:label="lab_pre_LiabilitiesUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Undiscounted Cash Flows</link:label>
    <link:label id="lab_pre_LiabilitiesUndiscountedCashFlows_documentation_en-US" xlink:label="lab_pre_LiabilitiesUndiscountedCashFlows" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liabilities, Undiscounted Cash Flows</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LiabilitiesUndiscountedCashFlows" xlink:href="pre-20251231.xsd#pre_LiabilitiesUndiscountedCashFlows"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_LiabilitiesUndiscountedCashFlows" xlink:to="lab_pre_LiabilitiesUndiscountedCashFlows" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_WriteOffMember_b7f3c1c9-8dad-4e96-b6b5-a6510bd1c78b_terseLabel_en-US" xlink:label="lab_pre_WriteOffMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Write-off</link:label>
    <link:label id="lab_pre_WriteOffMember_label_en-US" xlink:label="lab_pre_WriteOffMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Write-Off [Member]</link:label>
    <link:label id="lab_pre_WriteOffMember_documentation_en-US" xlink:label="lab_pre_WriteOffMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Write-Off</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_WriteOffMember" xlink:href="pre-20251231.xsd#pre_WriteOffMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_WriteOffMember" xlink:to="lab_pre_WriteOffMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ifrs-full_MeasurementAxis_87c9095e-d3a6-4820-a3c7-a2c2f137f2ac_terseLabel_en-US" xlink:label="lab_ifrs-full_MeasurementAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement [axis]</link:label>
    <link:label id="lab_ifrs-full_MeasurementAxis_label_en-US" xlink:label="lab_ifrs-full_MeasurementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement [axis]</link:label>
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    <link:label id="lab_pre_ScheduleOfDetailsOfOtherEquityInstrumentsOutstandingTableTextBlock_b6b5eaa4-227a-4c95-874d-5fdf3e314134_terseLabel_en-US" xlink:label="lab_pre_ScheduleOfDetailsOfOtherEquityInstrumentsOutstandingTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of details of the restricted share units outstanding</link:label>
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    <link:label id="lab_ifrs-full_DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences_6a361210-be1a-47d7-85d0-13a248370bbf_terseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Origination and reversal of temporary differences</link:label>
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    <link:label id="lab_pre_SellingAndDistributionExpensesMember_c4567ce9-6543-4890-b5f2-7b88d8771308_terseLabel_en-US" xlink:label="lab_pre_SellingAndDistributionExpensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling and marketing expenses</link:label>
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    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain_30b67828-5f81-4834-80bf-d6f550554d3c_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of intangible assets other than goodwill [domain]</link:label>
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    <link:label id="lab_pre_RestOfTheWorldMember_3b74f3df-abfe-4fd1-b0be-685d7905d3b0_terseLabel_en-US" xlink:label="lab_pre_RestOfTheWorldMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rest of the world</link:label>
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    <link:label id="lab_pre_SalesOfMedicalDiagnosticsProductsWithinTheDiagnosticsSegmentMember_1ba0bec3-7e90-40bc-bc40-b7b301cd7ffd_terseLabel_en-US" xlink:label="lab_pre_SalesOfMedicalDiagnosticsProductsWithinTheDiagnosticsSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales of medical diagnostics products within the diagnostics segment</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesTable" xlink:href="pre-20251231.xsd#pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesTable" xlink:to="lab_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract_4a538cb1-db4b-45ce-8363-a48712140895_terseLabel_en-US" xlink:label="lab_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major components of tax expense (income) [abstract]</link:label>
    <link:label id="lab_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract_label_en-US" xlink:label="lab_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Major components of tax expense (income) [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract" xlink:to="lab_ifrs-full_MajorComponentsOfTaxExpenseIncomeAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate_9286f19e-354a-4beb-b5d5-e9a077d7956a_totalLabel_en-US" xlink:label="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total net cash inflow arising on acquisition</link:label>
    <link:label id="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate_label_en-US" xlink:label="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Outflow Arising Recognised As Of Acquisition Date</link:label>
    <link:label id="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate_documentation_en-US" xlink:label="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net Cash Outflow Arising Recognised As Of Acquisition Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate" xlink:href="pre-20251231.xsd#pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate" xlink:to="lab_pre_NetCashOutflowArisingRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_EuropaPartnersHoldingsLLCMember_e60b204e-c012-49a5-b8a3-caef61ad70d6_terseLabel_en-US" xlink:label="lab_pre_EuropaPartnersHoldingsLLCMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Europa Partners Holdings, LLC (note 33)</link:label>
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    <link:label id="lab_pre_EuropaPartnersHoldingsLLCMember_documentation_en-US" xlink:label="lab_pre_EuropaPartnersHoldingsLLCMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Europa Partners Holdings, LLC</link:label>
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    <link:label id="lab_pre_MaterialAccountingPoliciesLineItems_019d986f-be91-7ecc-b42e-9baf42c0b600_terseLabel_en-US" xlink:label="lab_pre_MaterialAccountingPoliciesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Material Accounting Policies [Line Items]</link:label>
    <link:label id="lab_pre_MaterialAccountingPoliciesLineItems_label_en-US" xlink:label="lab_pre_MaterialAccountingPoliciesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Material Accounting Policies [Line Items]</link:label>
    <link:label id="lab_pre_MaterialAccountingPoliciesLineItems_documentation_en-US" xlink:label="lab_pre_MaterialAccountingPoliciesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Material Accounting Policies [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_MaterialAccountingPoliciesLineItems" xlink:href="pre-20251231.xsd#pre_MaterialAccountingPoliciesLineItems"/>
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    <link:label id="lab_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock_6ff6808a-941e-4263-b621-1e35e372813c_verboseLabel_en-US" xlink:label="lab_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Summary of expiry date of cumulative tax losses explanatory</link:label>
    <link:label id="lab_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock_label_en-US" xlink:label="lab_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Detailed Information Expiry Date Of Cumulative Tax Losses Explanatory [Table Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock" xlink:to="lab_pre_DisclosureOfDetailedInformationExpiryDateOfCumulativeTaxLossesExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_IncomeTaxDisclosureTable_cbbf446f-54cf-452c-bb03-a3f6cbcb2e7e_terseLabel_en-US" xlink:label="lab_pre_IncomeTaxDisclosureTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Table]</link:label>
    <link:label id="lab_pre_IncomeTaxDisclosureTable_label_en-US" xlink:label="lab_pre_IncomeTaxDisclosureTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Table]</link:label>
    <link:label id="lab_pre_IncomeTaxDisclosureTable_documentation_en-US" xlink:label="lab_pre_IncomeTaxDisclosureTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IncomeTaxDisclosureTable" xlink:href="pre-20251231.xsd#pre_IncomeTaxDisclosureTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IncomeTaxDisclosureTable" xlink:to="lab_pre_IncomeTaxDisclosureTable" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions_019b2658-27ed-70ce-880e-76dc0e8f2a0b_verboseLabel_en-US" xlink:label="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Amounts due from equity-accounted investees</link:label>
    <link:label id="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions_label_en-US" xlink:label="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amounts Receivable From Equity-Accounted Investees, Related Party Transactions</link:label>
    <link:label id="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions_documentation_en-US" xlink:label="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amounts Receivable From Equity-Accounted Investees, Related Party Transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions" xlink:href="pre-20251231.xsd#pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions" xlink:to="lab_pre_AmountsReceivableFromEquityAccountedInvesteesRelatedPartyTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncontrollingInterests_0dc9308e-f9a8-46d3-910c-330e8cb1b0e1_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_NoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncontrollingInterests" xlink:to="lab_ifrs-full_NoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_IM8GroupHoldingCompayMember_2921ffd8-9c77-4e70-856e-4b7fa722a733_terseLabel_en-US" xlink:label="lab_pre_IM8GroupHoldingCompayMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">IM8 Group Holding Company</link:label>
    <link:label id="lab_pre_IM8GroupHoldingCompayMember_label_en-US" xlink:label="lab_pre_IM8GroupHoldingCompayMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">IM8 Group Holding Compay [Member]</link:label>
    <link:label id="lab_pre_IM8GroupHoldingCompayMember_documentation_en-US" xlink:label="lab_pre_IM8GroupHoldingCompayMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">IM8 Group Holding Compay</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IM8GroupHoldingCompayMember" xlink:href="pre-20251231.xsd#pre_IM8GroupHoldingCompayMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_IM8GroupHoldingCompayMember" xlink:to="lab_pre_IM8GroupHoldingCompayMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsAxis_db46935b-b668-47dd-849a-85928a2787db_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment consolidation items [axis]</link:label>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsAxis_label_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment consolidation items [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentConsolidationItemsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentConsolidationItemsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SegmentConsolidationItemsAxis" xlink:to="lab_ifrs-full_SegmentConsolidationItemsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_WarrantsMember_97af824f-f510-414d-8a6c-ad95c6a0e635_terseLabel_en-US" xlink:label="lab_ifrs-full_WarrantsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_WarrantsMember_85f14954-b4e4-438f-b69d-6858e4b961e5_verboseLabel_en-US" xlink:label="lab_ifrs-full_WarrantsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Warrants</link:label>
    <link:label id="lab_ifrs-full_WarrantsMember_label_en-US" xlink:label="lab_ifrs-full_WarrantsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrants [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WarrantsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WarrantsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_WarrantsMember" xlink:to="lab_ifrs-full_WarrantsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_06cccf56-5767-4f19-9a7b-fba7b3712fc7_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_019d70be-ff7d-700e-ae6a-f26a10aa5f21_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_94a6075d-f9d0-401c-8fe0-c64240241ae0_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loss attributable to non-controlling interests</link:label>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss), attributable to non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:to="lab_ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAbstract_54d6e0e6-79b2-423f-8756-f721c146387b_terseLabel_en-US" xlink:label="lab_ifrs-full_EquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity</link:label>
    <link:label id="lab_ifrs-full_EquityAbstract_label_en-US" xlink:label="lab_ifrs-full_EquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAbstract" xlink:to="lab_ifrs-full_EquityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherExpenseByNature_59e9f386-8dc3-4c85-9d81-ce89dedda074_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherExpenseByNature" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total depreciation and amortization charges</link:label>
    <link:label id="lab_ifrs-full_OtherExpenseByNature_label_en-US" xlink:label="lab_ifrs-full_OtherExpenseByNature" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other expenses, by nature</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherExpenseByNature" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherExpenseByNature"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherExpenseByNature" xlink:to="lab_ifrs-full_OtherExpenseByNature" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_703e1f6a-c587-4911-9629-0e605213f879_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:to="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract_46dec308-45f6-4354-aa68-e790862ea737_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Continuing operations</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsAbstract"/>
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    <link:label id="lab_ifrs-full_ClassesOfEmployeeBenefitsExpenseAbstract_f3fa5e3d-aaee-4aa5-9792-76e48a954e86_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfEmployeeBenefitsExpenseAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Continuing operations</link:label>
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    <link:label id="lab_ifrs-full_AdjustmentsForAmortisationExpense_079bde14-c7e0-47d4-ab5c-9d053e64893e_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of intangible assets</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForAmortisationExpense_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for amortisation expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForAmortisationExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForAmortisationExpense"/>
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    <link:label id="lab_dei_AuditorFirmId_bad5bc29-7758-4b90-9603-2311f8960bf7_terseLabel_en-US" xlink:label="lab_dei_AuditorFirmId" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Auditor Firm ID</link:label>
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    <link:label id="lab_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesLineItems_documentation_en-US" xlink:label="lab_pre_ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ScheduleOfCarryingAmountsAndFairValuesOfFinancialAssetsAndFinancialLiabilitiesLineItems</link:label>
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    <link:label id="lab_ifrs-full_SharePremiumMember_17b1591d-a8b6-4165-adf5-8463077fbbe3_terseLabel_en-US" xlink:label="lab_ifrs-full_SharePremiumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share premium</link:label>
    <link:label id="lab_ifrs-full_SharePremiumMember_label_en-US" xlink:label="lab_ifrs-full_SharePremiumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share premium [member]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory_e9de3cb8-2323-4bf1-97da-e164405ae697_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [text block]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory_6d2697ed-b9f7-4607-85bf-431c30663343_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adoption of new and revised standards</link:label>
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    <link:label id="lab_pre_RevaluationIncreaseDecreaseDigitalAssetsNumber_019caedc-506a-749b-a980-c2de0500b20b_terseLabel_en-US" xlink:label="lab_pre_RevaluationIncreaseDecreaseDigitalAssetsNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revaluation adjustments (in number of bitcoin)</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_RevaluationIncreaseDecreaseDigitalAssetsNumber" xlink:href="pre-20251231.xsd#pre_RevaluationIncreaseDecreaseDigitalAssetsNumber"/>
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    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_5ad9a6c0-d4c6-4543-af74-3cf5f7c1e069_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity shareholders of the Company</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_a5dcf7d6-f125-4cc4-a79a-fca4969da09b_verboseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total comprehensive expense attributable to equity shareholder of the parent Company</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income, attributable to owners of parent</link:label>
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    <link:label id="lab_ifrs-full_Liabilities_ac56acfe-94b8-449d-a2ef-922ef53067b4_totalLabel_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_ifrs-full_Liabilities_af600328-9d98-453e-b483-4a9967b45dcf_terseLabel_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_ifrs-full_Liabilities_d1199b8c-0b5f-4fde-a20a-3546f1ad2fd9_periodStartLabel_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at January 1</link:label>
    <link:label id="lab_ifrs-full_Liabilities_f888beeb-de6a-4cd4-b709-8df4a480fd29_periodEndLabel_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at December 31</link:label>
    <link:label id="lab_ifrs-full_Liabilities_label_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Liabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Liabilities" xlink:to="lab_ifrs-full_Liabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisclosureOfMajorNonCashTransactionsTextBlock_019d780e-589b-7aa6-988e-1674e0ccf6db_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfMajorNonCashTransactionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major non-cash transactions</link:label>
    <link:label id="lab_pre_DisclosureOfMajorNonCashTransactionsTextBlock_label_en-US" xlink:label="lab_pre_DisclosureOfMajorNonCashTransactionsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Major Non-Cash Transactions [Text Block]</link:label>
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    <link:label id="lab_pre_DigitalAssetsCost_019ce1b4-31f8-7333-8c3b-b5a86b802e5b_verboseLabel_en-US" xlink:label="lab_pre_DigitalAssetsCost" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Digital assets - Bitcoin</link:label>
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    <link:label id="lab_pre_DigitalAssetsCost_documentation_en-US" xlink:label="lab_pre_DigitalAssetsCost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Digital Assets, Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DigitalAssetsCost" xlink:href="pre-20251231.xsd#pre_DigitalAssetsCost"/>
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    <link:label id="lab_ifrs-full_OfficeEquipmentMember_43a667e3-ee86-4e68-9269-5827d20ca9ac_terseLabel_en-US" xlink:label="lab_ifrs-full_OfficeEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Office and lab equipment</link:label>
    <link:label id="lab_ifrs-full_OfficeEquipmentMember_a4eaca76-dbd7-480a-b4ed-be9feea6af19_verboseLabel_en-US" xlink:label="lab_ifrs-full_OfficeEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Office equipment, carried at depreciated cost</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_79c1b30b-7e62-45d2-a12d-0f125071eebd_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [table]</link:label>
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    <link:label id="lab_pre_AlternativeAssetsLineItems_019ce1b5-8995-7a3f-8370-5d364593d330_terseLabel_en-US" xlink:label="lab_pre_AlternativeAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternative Assets [Line Items]</link:label>
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    <link:label id="lab_pre_AlternativeAssetsLineItems_documentation_en-US" xlink:label="lab_pre_AlternativeAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Alternative Assets [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AlternativeAssetsLineItems" xlink:href="pre-20251231.xsd#pre_AlternativeAssetsLineItems"/>
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    <link:label id="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_2f3ea8fb-00fe-43ce-8d22-41162b253b5d_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax payable</link:label>
    <link:label id="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_label_en-US" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current tax liabilities, current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:to="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_TitleOfIndividualAxis_f3d3afee-5a47-41e6-8864-dd93ca3e8b13_terseLabel_en-US" xlink:label="lab_srt_TitleOfIndividualAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title of Individual [Axis]</link:label>
    <link:label id="lab_srt_TitleOfIndividualAxis_label_en-US" xlink:label="lab_srt_TitleOfIndividualAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title and Position [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_TitleOfIndividualAxis"/>
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    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost_01011a6f-8acc-4d03-9447-27aa48b4d713_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities at amortized cost</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities at amortised cost</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialLiabilitiesAtAmortisedCost" xlink:to="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_abfd7398-d141-487f-816a-b1a1273018e6_negatedLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Trade payables</link:label>
    <link:label id="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_label_en-US" xlink:label="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and other payables recognised as of acquisition date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate" xlink:to="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_AdjustmentsForOtherFinanceCosts_223bce70-1fb4-4f32-9fbf-b82e43a8266d_terseLabel_en-US" xlink:label="lab_pre_AdjustmentsForOtherFinanceCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other finance costs</link:label>
    <link:label id="lab_pre_AdjustmentsForOtherFinanceCosts_label_en-US" xlink:label="lab_pre_AdjustmentsForOtherFinanceCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments For Other Finance Costs</link:label>
    <link:label id="lab_pre_AdjustmentsForOtherFinanceCosts_documentation_en-US" xlink:label="lab_pre_AdjustmentsForOtherFinanceCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments For Other Finance Costs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentsForOtherFinanceCosts" xlink:href="pre-20251231.xsd#pre_AdjustmentsForOtherFinanceCosts"/>
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    <link:label id="lab_pre_ShareBasedPaymentArrangementsAwardVestingPeriod_af401667-e4ab-43ff-ac81-27bafc1fcd12_terseLabel_en-US" xlink:label="lab_pre_ShareBasedPaymentArrangementsAwardVestingPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vesting Period (in years)</link:label>
    <link:label id="lab_pre_ShareBasedPaymentArrangementsAwardVestingPeriod_label_en-US" xlink:label="lab_pre_ShareBasedPaymentArrangementsAwardVestingPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangements, Award Vesting Period</link:label>
    <link:label id="lab_pre_ShareBasedPaymentArrangementsAwardVestingPeriod_documentation_en-US" xlink:label="lab_pre_ShareBasedPaymentArrangementsAwardVestingPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangements, Award Vesting Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ShareBasedPaymentArrangementsAwardVestingPeriod" xlink:href="pre-20251231.xsd#pre_ShareBasedPaymentArrangementsAwardVestingPeriod"/>
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    <link:label id="lab_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_db57e003-b4ec-4321-8a44-367a111e1a8d_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-tax discount rate (%)</link:label>
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    <link:label id="lab_ifrs-full_CurrentValueAddedTaxPayables_ac683d8e-c25b-4ade-a211-318325c6d3cf_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentValueAddedTaxPayables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Value added tax payable</link:label>
    <link:label id="lab_ifrs-full_CurrentValueAddedTaxPayables_label_en-US" xlink:label="lab_ifrs-full_CurrentValueAddedTaxPayables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current value added tax payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentValueAddedTaxPayables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentValueAddedTaxPayables"/>
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    <link:label id="lab_pre_AdditionsOtherThanThroughBusinessCombinationsDigitalAssets_019caedc-506a-7a3f-b1af-ee3e9e2a6fc1_terseLabel_en-US" xlink:label="lab_pre_AdditionsOtherThanThroughBusinessCombinationsDigitalAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition of digital assets</link:label>
    <link:label id="lab_pre_AdditionsOtherThanThroughBusinessCombinationsDigitalAssets_label_en-US" xlink:label="lab_pre_AdditionsOtherThanThroughBusinessCombinationsDigitalAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions Other Than Through Business Combinations, Digital Assets</link:label>
    <link:label id="lab_pre_AdditionsOtherThanThroughBusinessCombinationsDigitalAssets_documentation_en-US" xlink:label="lab_pre_AdditionsOtherThanThroughBusinessCombinationsDigitalAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additions Other Than Through Business Combinations, Digital Assets</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementExplanatory_3b24cef3-28d9-4b1c-9fd9-da1e621f1259_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value measurements and valuation processes and fair value measurement of warrant liabilities</link:label>
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    <link:label id="lab_ifrs-full_LeaseLiabilitiesMember_e5e25938-e13f-40a4-babf-db902ae9963c_terseLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilitiesMember_label_en-US" xlink:label="lab_ifrs-full_LeaseLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease liabilities [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LeaseLiabilitiesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilitiesMember"/>
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    <link:label id="lab_pre_BeneficialInterestHeldDomain_label_en-US" xlink:label="lab_pre_BeneficialInterestHeldDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Beneficial Interest Held [Domain]</link:label>
    <link:label id="lab_pre_BeneficialInterestHeldDomain_documentation_en-US" xlink:label="lab_pre_BeneficialInterestHeldDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Beneficial Interest Held [Domain]</link:label>
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    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract_e1a49635-5061-43ef-be36-6790b2e66e65_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities measured at fair value</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities at fair value through profit or loss [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract"/>
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    <link:label id="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain_554c2bd5-b5b2-4759-8403-1003343523d0_terseLabel_en-US" xlink:label="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Type of measurement of expected credit losses [domain]</link:label>
    <link:label id="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain_label_en-US" xlink:label="lab_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of measurement of expected credit losses [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypeOfMeasurementOfExpectedCreditLossesDomain"/>
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    <link:label id="lab_pre_IncreaseDecreaseThroughLossOfControlOfSubsidiaryContractLiabilities_019ce2dd-82f9-78cd-af73-18a2799f87c0_negatedTerseLabel_en-US" xlink:label="lab_pre_IncreaseDecreaseThroughLossOfControlOfSubsidiaryContractLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Eliminated on disposal of a subsidiary</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_IncreaseDecreaseThroughLossOfControlOfSubsidiaryContractLiabilities" xlink:href="pre-20251231.xsd#pre_IncreaseDecreaseThroughLossOfControlOfSubsidiaryContractLiabilities"/>
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    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_0869f4cc-b6cf-4e7e-9f17-d3a1a22bb16f_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_13b24068-8fe1-4612-beba-fbf34058a5f3_periodStartLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment at beginning of period</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_bd6ce572-c895-43e6-80a5-35dd6f631f17_periodEndLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment at end of period</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment including right-of-use assets</link:label>
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    <link:label id="lab_pre_LossProfitAttributableToNonControllingInterestsAbstract_019d70c2-15c4-7bce-a3be-f89bfb50be55_terseLabel_en-US" xlink:label="lab_pre_LossProfitAttributableToNonControllingInterestsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">(Loss)/profit attributable to non-controlling interests</link:label>
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    <link:label id="lab_pre_LossProfitAttributableToNonControllingInterestsAbstract_documentation_en-US" xlink:label="lab_pre_LossProfitAttributableToNonControllingInterestsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">(Loss)/Profit Attributable To Non-Controlling Interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LossProfitAttributableToNonControllingInterestsAbstract" xlink:href="pre-20251231.xsd#pre_LossProfitAttributableToNonControllingInterestsAbstract"/>
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    <link:label id="lab_ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_877567aa-23fe-4ad0-bf7e-63939367e995_terseLabel_en-US" xlink:label="lab_ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expense from equity-settled share-based payment transactions</link:label>
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    <link:label id="lab_pre_WarrantLiabilitiesMember_20adefc4-a9fc-49f2-a9dc-69f51a6c87e8_terseLabel_en-US" xlink:label="lab_pre_WarrantLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrant liabilities</link:label>
    <link:label id="lab_pre_WarrantLiabilitiesMember_label_en-US" xlink:label="lab_pre_WarrantLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrant Liabilities [Member]</link:label>
    <link:label id="lab_pre_WarrantLiabilitiesMember_documentation_en-US" xlink:label="lab_pre_WarrantLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Warrant Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_WarrantLiabilitiesMember" xlink:href="pre-20251231.xsd#pre_WarrantLiabilitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_WarrantLiabilitiesMember" xlink:to="lab_pre_WarrantLiabilitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DeferredTaxLiabilities_ce1b764a-427b-4df0-99c4-dcd2a27cd8e4_terseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxLiabilities_label_en-US" xlink:label="lab_ifrs-full_DeferredTaxLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DeferredTaxLiabilities" xlink:to="lab_ifrs-full_DeferredTaxLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis_41224e2e-b8b7-4dd8-a1a0-2167fd3e7496_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment including right-of-use assets [axis]</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment including right-of-use assets [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis" xlink:to="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncome_2c76ebfe-cea6-4fdb-acc2-2dc9513b68c1_totalLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income/(expense) for the year</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncome_48b6510e-a54d-4b73-9bea-f88f11c64ed6_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive income for the year</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncome_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="lab_ifrs-full_OtherComprehensiveIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted_9a90992a-f9df-4ade-8faf-5e3472540712_terseLabel_en-US" xlink:label="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected probability of a liquidation event</link:label>
    <link:label id="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted_label_en-US" xlink:label="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Probability Of A Liquidation Event As Percentage, Share Options Granted</link:label>
    <link:label id="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted_documentation_en-US" xlink:label="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected Probability Of A Liquidation Event As Percentage, Share Options Granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted" xlink:href="pre-20251231.xsd#pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted" xlink:to="lab_pre_ExpectedProbabilityOfALiquidationEventAsPercentageShareOptionsGranted" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_ClassACommonStockMember_45c45ec9-5b92-4ee0-b31b-d12fbabaf8e2_terseLabel_en-US" xlink:label="lab_pre_ClassACommonStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class A ordinary shares</link:label>
    <link:label id="lab_pre_ClassACommonStockMember_label_en-US" xlink:label="lab_pre_ClassACommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class A Common Stock [Member]</link:label>
    <link:label id="lab_pre_ClassACommonStockMember_documentation_en-US" xlink:label="lab_pre_ClassACommonStockMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Class A Common Stock</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_ClassACommonStockMember" xlink:to="lab_pre_ClassACommonStockMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_SignificantAccountingPoliciesTableLineItems_0466b3ff-491f-4a0a-a73c-6f521a77fe38_terseLabel_en-US" xlink:label="lab_pre_SignificantAccountingPoliciesTableLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Material Accounting Policies Table [Line Items]</link:label>
    <link:label id="lab_pre_SignificantAccountingPoliciesTableLineItems_label_en-US" xlink:label="lab_pre_SignificantAccountingPoliciesTableLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SignificantAccountingPoliciesTable [Line Items]</link:label>
    <link:label id="lab_pre_SignificantAccountingPoliciesTableLineItems_documentation_en-US" xlink:label="lab_pre_SignificantAccountingPoliciesTableLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SignificantAccountingPoliciesTable [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_SignificantAccountingPoliciesTableLineItems" xlink:href="pre-20251231.xsd#pre_SignificantAccountingPoliciesTableLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_SignificantAccountingPoliciesTableLineItems" xlink:to="lab_pre_SignificantAccountingPoliciesTableLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfLiabilitiesAxis_ea27cf19-c48c-464c-a1e2-2b2755b5f5d4_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of liabilities [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfLiabilitiesAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of liabilities [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesAxis" xlink:to="lab_ifrs-full_ClassesOfLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisposalOfAssociateMember_019ce4ca-f0df-7598-b444-4d26d0e3e4c3_terseLabel_en-US" xlink:label="lab_pre_DisposalOfAssociateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disposal of associate</link:label>
    <link:label id="lab_pre_DisposalOfAssociateMember_label_en-US" xlink:label="lab_pre_DisposalOfAssociateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal of Associate [Member]</link:label>
    <link:label id="lab_pre_DisposalOfAssociateMember_documentation_en-US" xlink:label="lab_pre_DisposalOfAssociateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disposal of Associate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisposalOfAssociateMember" xlink:href="pre-20251231.xsd#pre_DisposalOfAssociateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisposalOfAssociateMember" xlink:to="lab_pre_DisposalOfAssociateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TreasurySharesMember_84778cb6-3a1f-492c-9f2a-8bcb06ca04b8_terseLabel_en-US" xlink:label="lab_ifrs-full_TreasurySharesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury stock</link:label>
    <link:label id="lab_ifrs-full_TreasurySharesMember_label_en-US" xlink:label="lab_ifrs-full_TreasurySharesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury shares [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TreasurySharesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TreasurySharesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TreasurySharesMember" xlink:to="lab_ifrs-full_TreasurySharesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets_019c7a5f-5d4b-7d4a-8e8e-42234be35b0d_terseLabel_en-US" xlink:label="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized fair value loss on digital assets</link:label>
    <link:label id="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets_label_en-US" xlink:label="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrealized Fair Value Gain (Loss) On Alternative Assets</link:label>
    <link:label id="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets_documentation_en-US" xlink:label="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unrealized Fair Value Gain (Loss) On Alternative Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_UnrealizedFairValueGainLossOnAlternativeAssets" xlink:href="pre-20251231.xsd#pre_UnrealizedFairValueGainLossOnAlternativeAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_UnrealizedFairValueGainLossOnAlternativeAssets" xlink:to="lab_pre_UnrealizedFairValueGainLossOnAlternativeAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_105ca3bf-d4f7-461d-a93a-bf5b050c9063_totalLabel_en-US" xlink:label="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total identifiable net assets acquired at fair value</link:label>
    <link:label id="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_00c40ac6-2b46-4734-8818-860530da304e_negatedLabel_en-US" xlink:label="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Fair value of identifiable net assets</link:label>
    <link:label id="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_label_en-US" xlink:label="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Identifiable assets acquired (liabilities assumed)</link:label>
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    <link:label id="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate_74f66e6f-cbbe-4796-8904-7a15d8ca03bb_negatedLabel_en-US" xlink:label="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
    <link:label id="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate_label_en-US" xlink:label="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities Recognised As Of Acquisition Date</link:label>
    <link:label id="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate_documentation_en-US" xlink:label="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Liabilities Recognised As Of Acquisition Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" xlink:href="pre-20251231.xsd#pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" xlink:to="lab_pre_LeaseLiabilitiesRecognisedAsOfAcquisitionDate" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_TradePayablesMember_6689d23a-a5d6-4887-829d-8fb39526616c_terseLabel_en-US" xlink:label="lab_pre_TradePayablesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade payables</link:label>
    <link:label id="lab_pre_TradePayablesMember_label_en-US" xlink:label="lab_pre_TradePayablesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade Payables [Member]</link:label>
    <link:label id="lab_pre_TradePayablesMember_documentation_en-US" xlink:label="lab_pre_TradePayablesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade Payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_TradePayablesMember" xlink:href="pre-20251231.xsd#pre_TradePayablesMember"/>
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    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInAssociate_05b4faef-5316-427a-8783-3fa1580c9458_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInAssociate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proportion&#160;of&#160;nominal&#160;value&#160;of issue&#160;capital&#160;held&#160;by&#160;the&#160;Company (%)</link:label>
    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInAssociate_ae237cce-df0c-4197-85a0-a16750ce673c_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInAssociate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proportion of voting rights held in associate (%)</link:label>
    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInAssociate_label_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInAssociate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of voting rights held in associate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfVotingPowerHeldInAssociate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfVotingPowerHeldInAssociate"/>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_34ce93c1-b85e-42e2-8c43-0be57a98110b_totalLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (decrease)/increase in cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) in cash and cash equivalents before effect of exchange rate changes</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:to="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_45facf0f-7ffc-4784-a44e-f092bfeedd5d_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of share-based payment arrangements [axis]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:to="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_Security12bTitle_25e3387f-26e0-47be-91e0-afd9f6ea0250_terseLabel_en-US" xlink:label="lab_dei_Security12bTitle" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Title of 12(b) Security</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_99964df4-c3b4-4668-be18-287175d6ef4c_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [line items]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"/>
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    <link:label id="lab_ifrs-full_IssueOfEquity_2aba26fd-f564-4afc-ab1e-d9d9d872ca92_terseLabel_en-US" xlink:label="lab_ifrs-full_IssueOfEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of shares to advisors</link:label>
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    <link:label id="lab_pre_PresentedByAbstract_dcd93c16-cda9-4c96-9d61-a326913f5d77_terseLabel_en-US" xlink:label="lab_pre_PresentedByAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Represented by:</link:label>
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    <link:label id="lab_pre_DisclosureOfJointVenturesAndAssociatesTable_b815790f-ac3f-4e8a-91ab-df6c4d308837_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfJointVenturesAndAssociatesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of associates [table]</link:label>
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    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary_661d7b66-68f1-4627-8a28-29732b167c13_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indirectly</link:label>
    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary_label_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of voting rights held in subsidiary</link:label>
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    <link:label id="lab_ifrs-full_DepreciationPropertyPlantAndEquipmentIncludingRightofuseAssets_ef6a1576-49ec-4874-b61a-8572e1ecd552_terseLabel_en-US" xlink:label="lab_ifrs-full_DepreciationPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Charge for the year</link:label>
    <link:label id="lab_ifrs-full_DepreciationPropertyPlantAndEquipmentIncludingRightofuseAssets_label_en-US" xlink:label="lab_ifrs-full_DepreciationPropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, property, plant and equipment including right-of-use assets</link:label>
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    <link:label id="lab_pre_IssuanceOfWarrants_019d0352-b5df-78e0-a4e9-1b4740df2e8b_terseLabel_en-US" xlink:label="lab_pre_IssuanceOfWarrants" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of warrants</link:label>
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    <link:label id="lab_pre_IssuanceOfWarrants_documentation_en-US" xlink:label="lab_pre_IssuanceOfWarrants" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Issuance Of Warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IssuanceOfWarrants" xlink:href="pre-20251231.xsd#pre_IssuanceOfWarrants"/>
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    <link:label id="lab_pre_CustomerRelationshipMember_d291fcac-32ec-4720-9604-76f4b9326237_terseLabel_en-US" xlink:label="lab_pre_CustomerRelationshipMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer relationship</link:label>
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    <link:label id="lab_pre_CustomerRelationshipMember_documentation_en-US" xlink:label="lab_pre_CustomerRelationshipMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer Relationship</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_CustomerRelationshipMember" xlink:href="pre-20251231.xsd#pre_CustomerRelationshipMember"/>
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    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsDomain_1bfa3151-1631-4641-b464-ecb86d51bb34_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment including right-of-use assets [domain]</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsDomain_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment including right-of-use assets [domain]</link:label>
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    <link:label id="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_9777dbfe-9e21-4f2b-ba85-c0e79de6f55d_terseLabel_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiaries [domain]</link:label>
    <link:label id="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_label_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiaries [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
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    <link:label id="lab_ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate_773b5d8b-2913-458a-8ec6-297e0c09b814_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Allowance account for credit losses of financial assets</link:label>
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    <link:label id="lab_pre_ProfitLossFromDiscontinuedOperationsAttributableToEquityShareholdersOfParentEntity_019ce4d7-5766-721e-98ee-a1b42e33fa52_terseLabel_en-US" xlink:label="lab_pre_ProfitLossFromDiscontinuedOperationsAttributableToEquityShareholdersOfParentEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit (loss) from discontinued operations</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossFromDiscontinuedOperations_8986626c-0536-43ad-82b9-7a19a6ee9c1a_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromDiscontinuedOperations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss from discontinued operations, net of tax</link:label>
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    <link:label id="lab_pre_ActGenomicsHoldingsCompanyLimitedACTGenomicsMember_582d4e7d-e1d6-42ec-bc48-a58f235c74f2_terseLabel_en-US" xlink:label="lab_pre_ActGenomicsHoldingsCompanyLimitedACTGenomicsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ACT Genomics Holdings Company Limited</link:label>
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    <link:label id="lab_ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss_54dbeb64-3794-4838-b94b-e361c9cee350_terseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">(Credited)/charged to profit or loss</link:label>
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    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_d3fcaa49-7873-4020-882b-caa11edd56db_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total adjustments to reconcile profit (loss)</link:label>
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    <link:label id="lab_pre_DecreaseThroughPaymentOfCapitalElementLeaseLiabilitiesLiabilitiesArisingFromFinancingActivities_9b32d4cd-74a0-40e9-af9d-6a372463a155_negatedLabel_en-US" xlink:label="lab_pre_DecreaseThroughPaymentOfCapitalElementLeaseLiabilitiesLiabilitiesArisingFromFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital element of lease rentals paid</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DecreaseThroughPaymentOfCapitalElementLeaseLiabilitiesLiabilitiesArisingFromFinancingActivities" xlink:to="lab_pre_DecreaseThroughPaymentOfCapitalElementLeaseLiabilitiesLiabilitiesArisingFromFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentsAxis_e9a0074f-8bac-49d8-b2f9-a11e290e234f_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [axis]</link:label>
    <link:label id="lab_ifrs-full_SegmentsAxis_label_en-US" xlink:label="lab_ifrs-full_SegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsAxis"/>
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    <link:label id="lab_pre_ScheduleOfAnalysisOfExpenseItemsInRelationToLeasesTableTextBlock_b126d6ae-9cbe-43a6-806c-120dc47911d0_verboseLabel_en-US" xlink:label="lab_pre_ScheduleOfAnalysisOfExpenseItemsInRelationToLeasesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of analysis of expense items in relation to leases</link:label>
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    <link:label id="lab_pre_AdjustmentsForDecreaseIncreaseInDeferredExpenses_documentation_en-US" xlink:label="lab_pre_AdjustmentsForDecreaseIncreaseInDeferredExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments For Decrease (Increase) In Deferred Expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_AdjustmentsForDecreaseIncreaseInDeferredExpenses" xlink:href="pre-20251231.xsd#pre_AdjustmentsForDecreaseIncreaseInDeferredExpenses"/>
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    <link:label id="lab_pre_PercentageOfVotingEquityInterestsDisposedOf_documentation_en-US" xlink:label="lab_pre_PercentageOfVotingEquityInterestsDisposedOf" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage Of Voting Equity Interests Disposed Of</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PercentageOfVotingEquityInterestsDisposedOf" xlink:href="pre-20251231.xsd#pre_PercentageOfVotingEquityInterestsDisposedOf"/>
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    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_1383515b-6bf7-49e7-a5cb-5a209d2005f7_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [table]</link:label>
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    <link:label id="lab_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialLiabilities_019ce2fe-01c4-762a-b15e-1613dffb7718_negatedTerseLabel_en-US" xlink:label="lab_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Eliminated on disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialLiabilities_documentation_en-US" xlink:label="lab_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Decrease Through Loss Of Control Of Subsidiary, Financial Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialLiabilities" xlink:href="pre-20251231.xsd#pre_DecreaseThroughLossOfControlOfSubsidiaryFinancialLiabilities"/>
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    <link:label id="lab_pre_AmountsDueFromRelatedCompaniesMember_5a8f3968-7d5a-4665-9ee6-4d701c237811_terseLabel_en-US" xlink:label="lab_pre_AmountsDueFromRelatedCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount due from a related company</link:label>
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    <link:label id="lab_ifrs-full_DepreciationPropertyPlantAndEquipment_15cb2289-5ea0-41ce-bb17-98e65729fe67_terseLabel_en-US" xlink:label="lab_ifrs-full_DepreciationPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">- property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_DepreciationPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ifrs-full_DepreciationPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, property, plant and equipment</link:label>
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    <link:label id="lab_pre_IssueOfEquityNewSharesAndAllocationOfWarrant_019d4869-9ca3-7db0-a7fd-d8441e3f19d9_terseLabel_en-US" xlink:label="lab_pre_IssueOfEquityNewSharesAndAllocationOfWarrant" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of new shares and allocation of warrant</link:label>
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    <link:label id="lab_ifrs-full_ReceivablesFromContractsWithCustomers_728659b5-63bb-4d71-a300-6318bc167c40_terseLabel_en-US" xlink:label="lab_ifrs-full_ReceivablesFromContractsWithCustomers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receipt from customers upon entering sales contracts</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossAbstract_c0f434a7-1eea-445a-abd6-a767238eab7d_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loss</link:label>
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    <link:label id="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_label_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial assets at amortised cost, category [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember"/>
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    <link:label id="lab_ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_16d02758-2223-49f3-8039-4f29180b2ff1_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected volatility</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected volatility, share options granted</link:label>
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    <link:label id="lab_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember_ea99c932-911d-4160-b753-4ef7e4b10b13_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Over 5 years but within 10 years</link:label>
    <link:label id="lab_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than five years and not later than ten years [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember" xlink:to="lab_ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_019cd8a6-b17c-7993-bb8c-e4f95f28d718_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable"/>
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    <link:label id="lab_ifrs-full_ParValuePerShare_ac401b95-003c-4e10-b90a-f22016a84ebe_terseLabel_en-US" xlink:label="lab_ifrs-full_ParValuePerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Par value per share (in US Dollars per share)</link:label>
    <link:label id="lab_ifrs-full_ParValuePerShare_label_en-US" xlink:label="lab_ifrs-full_ParValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Par value per share</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ParValuePerShare" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ParValuePerShare"/>
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    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_20154473-03bd-4db1-b712-1fdc81681665_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of property, plant and equipment [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:to="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock_019c74f6-ecc8-7fd0-bac5-1bb737aace11_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of consideration received for disposal of a subsidiary</link:label>
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    <link:label id="lab_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock_documentation_en-US" xlink:label="lab_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Consideration Received For Disposal Of A Subsidiary</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock" xlink:to="lab_pre_DisclosureOfConsiderationReceivedForDisposalOfASubsidiaryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted_3725b452-b3ed-4bfd-9494-d868c0cde6a3_terseLabel_en-US" xlink:label="lab_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected dividend yield</link:label>
    <link:label id="lab_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted_label_en-US" xlink:label="lab_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected dividend as percentage, share options granted</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted"/>
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    <link:label id="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesAdjustedLossFromDiscontinuedOperationsNetOfTaxMember_019da80b-5f66-7b33-aea5-dd17aefbf1c8_terseLabel_en-US" xlink:label="lab_pre_DiagnosticsSaleOfPrecisionOncologyServicesAdjustedLossFromDiscontinuedOperationsNetOfTaxMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diagnostics sale of precision oncology services, adjusted loss from discontinued operations, net of tax</link:label>
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    <link:label id="lab_pre_DisclosureOfDetailedInformationAboutChangesInOwnershipInterestTableTextBlock_220bd02c-798f-4167-8f35-8a9c9d4bdd64_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfDetailedInformationAboutChangesInOwnershipInterestTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about disposals</link:label>
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    <link:label id="lab_ifrs-full_PostemploymentBenefitExpenseDefinedContributionPlans_f34047ca-a8e4-45e2-ad8e-02fc6a5ea729_terseLabel_en-US" xlink:label="lab_ifrs-full_PostemploymentBenefitExpenseDefinedContributionPlans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contributions to defined contribution retirement plan</link:label>
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    <link:label id="lab_pre_LeaseLiabilitiesCurrentAsOfDisposalDate_019c758b-70d5-7b94-8a49-0cbd7872122c_negatedTerseLabel_en-US" xlink:label="lab_pre_LeaseLiabilitiesCurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities - current</link:label>
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    <link:label id="lab_pre_LeaseLiabilitiesCurrentAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_LeaseLiabilitiesCurrentAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease liabilities - Current as of Disposal Date</link:label>
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    <link:label id="lab_dei_AmendmentFlag_030721d8-bb4b-43ad-8178-d1027083680a_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
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    <link:label id="lab_ifrs-full_ComponentsOfEquityDomain_932f3275-84a3-4351-b1fe-aa83befbbf01_terseLabel_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of equity [domain]</link:label>
    <link:label id="lab_ifrs-full_ComponentsOfEquityDomain_label_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Components of equity [domain]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsLineItems_300e653e-1b6f-4e00-9d74-af9138b61bdc_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [line items]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory_52264566-0ff9-4487-ba7a-1650a81610d0_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of goodwill balance allocated to the CGUs</link:label>
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    <link:label id="lab_pre_DisclosureOfDetailedInformationAboutInterestInEquityMethodInvestmentsTableTextBlock_553bba9a-211d-4fac-bff9-fc1cf02aea2f_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfDetailedInformationAboutInterestInEquityMethodInvestmentsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of detailed information about interest in joint venture and associates</link:label>
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    <link:label id="lab_ifrs-full_ExpectedCreditLossRate_a21b1979-40dc-424b-8eb9-d461e7693f6c_terseLabel_en-US" xlink:label="lab_ifrs-full_ExpectedCreditLossRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average loss rate</link:label>
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    <link:label id="lab_pre_DisposalOfASubsidiaryDeferredCashConsiderationReceivable_019c7542-7467-7147-beaa-92f750353650_terseLabel_en-US" xlink:label="lab_pre_DisposalOfASubsidiaryDeferredCashConsiderationReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred cash consideration (Note)</link:label>
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    <link:label id="lab_ifrs-full_CurrentLeaseLiabilities_625b3442-5cac-497b-931d-39839eb37b6a_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities - current</link:label>
    <link:label id="lab_ifrs-full_CurrentLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLeaseLiabilities"/>
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    <link:label id="lab_pre_LossPerShareContinuingOperationsAbstract_f29fc56b-3377-42f9-87e5-da02c65e745a_terseLabel_en-US" xlink:label="lab_pre_LossPerShareContinuingOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss per share - Continuing operations</link:label>
    <link:label id="lab_pre_LossPerShareContinuingOperationsAbstract_label_en-US" xlink:label="lab_pre_LossPerShareContinuingOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Per Share Continuing Operations [Abstract]</link:label>
    <link:label id="lab_pre_LossPerShareContinuingOperationsAbstract_documentation_en-US" xlink:label="lab_pre_LossPerShareContinuingOperationsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Per Share Continuing Operations</link:label>
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    <link:label id="lab_pre_PercentageOfVotingEquityInterestDisposed_documentation_en-US" xlink:label="lab_pre_PercentageOfVotingEquityInterestDisposed" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage Of Voting Equity Interest Disposed</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_PercentageOfVotingEquityInterestDisposed" xlink:href="pre-20251231.xsd#pre_PercentageOfVotingEquityInterestDisposed"/>
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    <link:label id="lab_pre_NetAssetsAsOfDisposalDate_019c753c-228e-78bb-afc5-ba7deabd1db9_totalLabel_en-US" xlink:label="lab_pre_NetAssetsAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net assets disposed of</link:label>
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    <link:label id="lab_pre_NetAssetsAsOfDisposalDate_documentation_en-US" xlink:label="lab_pre_NetAssetsAsOfDisposalDate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disposal Of A subsidiary, Including Discontinued Operation, Net Assets</link:label>
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    <link:label id="lab_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock_373110bd-42b1-474b-9450-cacdd15651c5_terseLabel_en-US" xlink:label="lab_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of other operating income expense</link:label>
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    <link:label id="lab_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock_documentation_en-US" xlink:label="lab_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Other Operating Income Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:to="lab_pre_DisclosureOfOtherOperatingIncomeExpenseTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock_8b2efb71-2fa0-4324-9f28-eaa1f9293b7b_terseLabel_en-US" xlink:label="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrant liabilities</link:label>
    <link:label id="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock_label_en-US" xlink:label="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure In Entirety Of Warranty Liabilities Explanatory [Text Block]</link:label>
    <link:label id="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock_documentation_en-US" xlink:label="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure In Entirety Of Warranty Liabilities Explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock" xlink:href="pre-20251231.xsd#pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock" xlink:to="lab_pre_DisclosureInEntiretyOfWarrantyLiabilitiesExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DilutedEarningsLossPerShare_92df749a-2152-418b-8b51-89a58321a1b7_terseLabel_en-US" xlink:label="lab_ifrs-full_DilutedEarningsLossPerShare" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diluted loss per share (USD per share)</link:label>
    <link:label id="lab_ifrs-full_DilutedEarningsLossPerShare_label_en-US" xlink:label="lab_ifrs-full_DilutedEarningsLossPerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diluted earnings (loss) per share</link:label>
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    <link:label id="lab_ifrs-full_MaturityDomain_9aee0809-079a-4bce-8991-259fc3fa4d5f_terseLabel_en-US" xlink:label="lab_ifrs-full_MaturityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity [domain]</link:label>
    <link:label id="lab_ifrs-full_MaturityDomain_label_en-US" xlink:label="lab_ifrs-full_MaturityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturity [domain]</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory_be4f368f-5167-4d58-9e55-dc1caf08bd28_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of the principal subsidiaries of the Company</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory_b70c973e-1ed2-4989-b6ce-d9e72251247a_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of the group's material non-controlling interests</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory_df194c71-7262-4a1a-8ea9-8e67f8dd8751_verboseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">List of subsidiaries</link:label>
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    <link:label id="lab_pre_IssuanceOfPrivatePlacementWarrantsFairValue_019d7811-d177-7dfc-8822-70a1251f2b69_terseLabel_en-US" xlink:label="lab_pre_IssuanceOfPrivatePlacementWarrantsFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of private placement warrants</link:label>
    <link:label id="lab_pre_IssuanceOfPrivatePlacementWarrantsFairValue_label_en-US" xlink:label="lab_pre_IssuanceOfPrivatePlacementWarrantsFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Issuance Of Private Placement Warrants, Fair Value</link:label>
    <link:label id="lab_pre_IssuanceOfPrivatePlacementWarrantsFairValue_documentation_en-US" xlink:label="lab_pre_IssuanceOfPrivatePlacementWarrantsFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Issuance Of Private Placement Warrants, Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_IssuanceOfPrivatePlacementWarrantsFairValue" xlink:href="pre-20251231.xsd#pre_IssuanceOfPrivatePlacementWarrantsFairValue"/>
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    <link:label id="lab_pre_EmployeesMember_58a8b5c8-300f-491a-a992-ee68cbffb37a_terseLabel_en-US" xlink:label="lab_pre_EmployeesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">RSUs granted to employees</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_pre_EmployeesMember" xlink:href="pre-20251231.xsd#pre_EmployeesMember"/>
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    <link:label id="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_0e38af95-88c9-4123-bbfe-d477a38ba402_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Categories of financial liabilities [axis]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:to="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_9ca5acfa-8ec5-4147-9e03-27164990db55_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of terms and conditions of share-based payment arrangement [table]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable"/>
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    <link:label id="lab_ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable_a05d3a31-d2a0-4e72-ad5a-76210e727f52_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of reconciliation of liabilities arising from financing activities [table]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable"/>
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    <link:label id="lab_pre_NumberOfWarrantsIssued_019d034a-0421-722d-a7fc-1a616afb4c87_terseLabel_en-US" xlink:label="lab_pre_NumberOfWarrantsIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of warrants issued (in shares)</link:label>
    <link:label id="lab_pre_NumberOfWarrantsIssued_label_en-US" xlink:label="lab_pre_NumberOfWarrantsIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Warrants Issued</link:label>
    <link:label id="lab_pre_NumberOfWarrantsIssued_documentation_en-US" xlink:label="lab_pre_NumberOfWarrantsIssued" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Warrants Issued</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_pre_NumberOfWarrantsIssued" xlink:href="pre-20251231.xsd#pre_NumberOfWarrantsIssued"/>
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    <link:label id="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrument_bbbc3d22-f223-4fa0-bc75-4488d5f65bbe_terseLabel_en-US" xlink:label="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrument" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities for puttable financial instrument</link:label>
    <link:label id="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrument_ae576c8c-cfb0-45a7-aa71-83ccceacb14e_periodStartLabel_en-US" xlink:label="lab_pre_CurrentLiabilitiesForPuttableFinancialInstrument" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at January 1</link:label>
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    <link:label id="lab_ifrs-full_WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract_f728b1bc-96d0-4d79-a09f-a7342f9ccc0a_verboseLabel_en-US" xlink:label="lab_ifrs-full_WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of shares</link:label>
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