<?xml version="1.0" encoding="utf-8"?>
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.xbrl.org/2003/linkbase">
  <roleRef roleURI="http://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:href="http://www.esma.europa.eu/taxonomy/2020-03-16/esef_cor.xsd#esef_role-999999" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://dlgplc.com/xbrl/2021/roles/Anchoring" xlink:href="dlgplc-2021-12-31.xsd#Anchoring" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://dlgplc.com/xbrl/2021/roles/StatementOfChangesInEquity" xlink:href="dlgplc-2021-12-31.xsd#StatementOfChangesInEquity" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <definitionLink xlink:role="http://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_GrossEarnedPremium" xlink:label="dlgplc_GrossEarnedPremium" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="http://www.esma.europa.eu/taxonomy/2020-03-16/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:label="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinancialAssets" xlink:label="ifrs-full_FinancialAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:label="ifrs-full_AddressOfRegisteredOfficeOfEntity" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReinsuranceAssets" xlink:label="ifrs-full_ReinsuranceAssets" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InsuranceClaimsRecoverableFromReinsurers" xlink:label="dlgplc_InsuranceClaimsRecoverableFromReinsurers" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" xlink:label="ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredAcquisitionCostsArisingFromInsuranceContracts" xlink:label="ifrs-full_DeferredAcquisitionCostsArisingFromInsuranceContracts" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_PurchaseOfEmployeeTrustSharesClassifiedAsFinancingActivities" xlink:label="dlgplc_PurchaseOfEmployeeTrustSharesClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DilutedEarningsLossPerShare" xlink:label="ifrs-full_DilutedEarningsLossPerShare" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InsuranceAndOtherReceivables" xlink:label="dlgplc_InsuranceAndOtherReceivables" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Borrowings" xlink:label="ifrs-full_Borrowings" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InsuranceContractsIssuedThatAreLiabilities" xlink:label="ifrs-full_InsuranceContractsIssuedThatAreLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DerivativeFinancialAssets" xlink:label="ifrs-full_DerivativeFinancialAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_NetCashGeneratedFromOperatingActivitiesBeforeInvestmentOfInsuranceAssetsClassifiedAsOperatingActivities" xlink:label="dlgplc_NetCashGeneratedFromOperatingActivitiesBeforeInvestmentOfInsuranceAssetsClassifiedAsOperatingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:label="ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_BasicEarningsLossPerShare" xlink:label="ifrs-full_BasicEarningsLossPerShare" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxLiabilities" xlink:label="ifrs-full_CurrentTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxAssets" xlink:label="ifrs-full_CurrentTaxAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherIncome" xlink:label="ifrs-full_OtherIncome" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_CashGeneratedFromInvestmentOfInsuranceAssets" xlink:label="dlgplc_CashGeneratedFromInvestmentOfInsuranceAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RightofuseAssets" xlink:label="ifrs-full_RightofuseAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAndLiabilities" xlink:label="ifrs-full_EquityAndLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_SubordinatedLiabilities" xlink:label="ifrs-full_SubordinatedLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IntangibleAssetsAndGoodwill" xlink:label="ifrs-full_IntangibleAssetsAndGoodwill" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InstalmentIncome" xlink:label="dlgplc_InstalmentIncome" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_ShareholdersEquity" xlink:label="dlgplc_ShareholdersEquity" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NetEarnedPremium" xlink:label="ifrs-full_NetEarnedPremium" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:label="ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" xlink:label="ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_AppropriationsPaidClassifiedAsFinancingActivities" xlink:label="dlgplc_AppropriationsPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Provisions" xlink:label="ifrs-full_Provisions" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:label="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" xlink:label="ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:label="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_ReinsurancePremium" xlink:label="dlgplc_ReinsurancePremium" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinanceCosts" xlink:label="ifrs-full_FinanceCosts" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:label="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:label="ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsNetOfTax" xlink:label="ifrs-full_ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsNetOfTax" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" xlink:label="ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DerivativeFinancialLiabilities" xlink:label="ifrs-full_DerivativeFinancialLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentIncome" xlink:label="ifrs-full_InvestmentIncome" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_TotalIncome" xlink:label="dlgplc_TotalIncome" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OperatingExpense" xlink:label="ifrs-full_OperatingExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FeeAndCommissionExpense" xlink:label="ifrs-full_FeeAndCommissionExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfParentEntity" xlink:label="ifrs-full_NameOfParentEntity" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NameOfUltimateParentOfGroup" xlink:label="ifrs-full_NameOfUltimateParentOfGroup" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RecognisedAssetsDefinedBenefitPlan" xlink:label="ifrs-full_RecognisedAssetsDefinedBenefitPlan" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_UnearnedPremiums" xlink:label="ifrs-full_UnearnedPremiums" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:label="ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_FinanceCostsIncludingLeaseInterestClassifiedAsFinancingActivities" xlink:label="dlgplc_FinanceCostsIncludingLeaseInterestClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax" xlink:label="ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_Tier1Notes" xlink:label="dlgplc_Tier1Notes" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" xlink:label="dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TradeAndOtherPayables" xlink:label="ifrs-full_TradeAndOtherPayables" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InsuranceClaims" xlink:label="dlgplc_InsuranceClaims" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners" xlink:label="ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_MiscellaneousOtherOperatingExpense" xlink:label="ifrs-full_MiscellaneousOtherOperatingExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentProperty" xlink:label="ifrs-full_InvestmentProperty" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_LeaseLiabilities" xlink:label="ifrs-full_LeaseLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_LegalFormOfEntity" xlink:label="ifrs-full_LegalFormOfEntity" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="ifrs-full_PropertyPlantAndEquipment" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_GrossEarnedPremium" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_ReinsurancePremium" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NetEarnedPremium" order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_InvestmentIncome" order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_InstalmentIncome" order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherIncome" order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_TotalIncome" order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_InsuranceClaims" order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_InsuranceClaimsRecoverableFromReinsurers" order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_FeeAndCommissionExpense" order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_MiscellaneousOtherOperatingExpense" order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OperatingExpense" order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_FinanceCosts" order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLossBeforeTax" order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations" order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProfitLossAttributableToOwnersOfParent" order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_BasicEarningsLossPerShare" order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DilutedEarningsLossPerShare" order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_GainsLossesOnCashFlowHedgesBeforeTax" order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax" order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsNetOfTax" order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" order="29" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IntangibleAssetsAndGoodwill" order="30" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PropertyPlantAndEquipment" order="31" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RightofuseAssets" order="32" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_InvestmentProperty" order="33" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ReinsuranceAssets" order="34" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTaxAssets" order="35" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DeferredAcquisitionCostsArisingFromInsuranceContracts" order="36" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_InsuranceAndOtherReceivables" order="37" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" order="38" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DerivativeFinancialAssets" order="39" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_RecognisedAssetsDefinedBenefitPlan" order="40" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_FinancialAssets" order="41" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashAndCashEquivalents" order="42" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners" order="43" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Assets" order="44" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_ShareholdersEquity" order="45" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_Tier1Notes" order="46" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_SubordinatedLiabilities" order="47" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_InsuranceContractsIssuedThatAreLiabilities" order="48" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_UnearnedPremiums" order="49" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Borrowings" order="50" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DerivativeFinancialLiabilities" order="51" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Provisions" order="52" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_TradeAndOtherPayables" order="53" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_LeaseLiabilities" order="54" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DeferredTaxLiabilities" order="55" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CurrentTaxLiabilities" order="56" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_Liabilities" order="57" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_EquityAndLiabilities" order="58" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_NetCashGeneratedFromOperatingActivitiesBeforeInvestmentOfInsuranceAssetsClassifiedAsOperatingActivities" order="59" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_CashGeneratedFromInvestmentOfInsuranceAssets" order="60" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities" order="61" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" order="62" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" order="63" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" order="64" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities" order="65" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" order="66" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_AppropriationsPaidClassifiedAsFinancingActivities" order="67" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_FinanceCostsIncludingLeaseInterestClassifiedAsFinancingActivities" order="68" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" order="69" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="dlgplc_PurchaseOfEmployeeTrustSharesClassifiedAsFinancingActivities" order="70" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_ProceedsFromIssueOfBondsNotesAndDebentures" order="71" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_PaymentsToAcquireOrRedeemEntitysShares" order="72" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities" order="73" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" order="74" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" order="75" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" order="76" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_LegalFormOfEntity" order="77" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_AddressOfRegisteredOfficeOfEntity" order="78" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfParentEntity" order="79" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:to="ifrs-full_NameOfUltimateParentOfGroup" order="80" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
  </definitionLink>
  <definitionLink xlink:role="http://dlgplc.com/xbrl/2021/roles/Anchoring" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_GrossEarnedPremium" xlink:label="dlgplc_GrossEarnedPremium" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_AppropriationsPaidClassifiedAsFinancingActivities" xlink:label="dlgplc_AppropriationsPaidClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_CashGeneratedFromInvestmentOfInsuranceAssets" xlink:label="dlgplc_CashGeneratedFromInvestmentOfInsuranceAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RevenueFromInterest" xlink:label="ifrs-full_RevenueFromInterest" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_Tier1Notes" xlink:label="dlgplc_Tier1Notes" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InsuranceClaims" xlink:label="dlgplc_InsuranceClaims" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherAssets" xlink:label="ifrs-full_OtherAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InstalmentIncome" xlink:label="dlgplc_InstalmentIncome" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" xlink:label="dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_SharesDistributedByEmployeeTrusts" xlink:label="dlgplc_SharesDistributedByEmployeeTrusts" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_ReinsurancePremium" xlink:label="dlgplc_ReinsurancePremium" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NetEarnedPremium" xlink:label="ifrs-full_NetEarnedPremium" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_PurchaseOfEmployeeTrustSharesClassifiedAsFinancingActivities" xlink:label="dlgplc_PurchaseOfEmployeeTrustSharesClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" xlink:label="ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InsuranceClaimsRecoverableFromReinsurers" xlink:label="dlgplc_InsuranceClaimsRecoverableFromReinsurers" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_FinanceCostsIncludingLeaseInterestClassifiedAsFinancingActivities" xlink:label="dlgplc_FinanceCostsIncludingLeaseInterestClassifiedAsFinancingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InsuranceContractsIssuedThatAreAssets" xlink:label="ifrs-full_InsuranceContractsIssuedThatAreAssets" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_ShareholdersEquity" xlink:label="dlgplc_ShareholdersEquity" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RetainedEarnings" xlink:label="ifrs-full_RetainedEarnings" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_InsuranceAndOtherReceivables" xlink:label="dlgplc_InsuranceAndOtherReceivables" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_SharesAcquiredByEmployeeTrusts" xlink:label="dlgplc_SharesAcquiredByEmployeeTrusts" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_NetCashGeneratedFromOperatingActivitiesBeforeInvestmentOfInsuranceAssetsClassifiedAsOperatingActivities" xlink:label="dlgplc_NetCashGeneratedFromOperatingActivitiesBeforeInvestmentOfInsuranceAssetsClassifiedAsOperatingActivities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PrepaymentsAndAccruedIncome" xlink:label="ifrs-full_PrepaymentsAndAccruedIncome" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherReceivables" xlink:label="ifrs-full_OtherReceivables" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_NetEarnedPremium" xlink:to="dlgplc_GrossEarnedPremium" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_NetEarnedPremium" xlink:to="dlgplc_ReinsurancePremium" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_RevenueFromInterest" xlink:to="dlgplc_InstalmentIncome" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" xlink:to="dlgplc_InsuranceClaims" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ClaimsAndBenefitsPaidNetOfReinsuranceRecoveries" xlink:to="dlgplc_InsuranceClaimsRecoverableFromReinsurers" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_Assets" xlink:to="dlgplc_InsuranceAndOtherReceivables" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="dlgplc_InsuranceAndOtherReceivables" xlink:to="ifrs-full_InsuranceContractsIssuedThatAreAssets" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="dlgplc_InsuranceAndOtherReceivables" xlink:to="ifrs-full_OtherReceivables" order="3" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_Assets" xlink:to="dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" xlink:to="ifrs-full_PrepaymentsAndAccruedIncome" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="dlgplc_PrepaymentsAccruedIncomeAndOtherAssets" xlink:to="ifrs-full_OtherAssets" order="3" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="dlgplc_ShareholdersEquity" xlink:to="ifrs-full_IssuedCapital" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="dlgplc_ShareholdersEquity" xlink:to="ifrs-full_RetainedEarnings" order="2" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="dlgplc_ShareholdersEquity" order="3" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_Equity" xlink:to="dlgplc_Tier1Notes" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:to="dlgplc_SharesAcquiredByEmployeeTrusts" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:to="dlgplc_SharesDistributedByEmployeeTrusts" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="dlgplc_NetCashGeneratedFromOperatingActivitiesBeforeInvestmentOfInsuranceAssetsClassifiedAsOperatingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="dlgplc_CashGeneratedFromInvestmentOfInsuranceAssets" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="dlgplc_AppropriationsPaidClassifiedAsFinancingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="dlgplc_FinanceCostsIncludingLeaseInterestClassifiedAsFinancingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="dlgplc_PurchaseOfEmployeeTrustSharesClassifiedAsFinancingActivities" order="1" xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" priority="1" />
  </definitionLink>
  <definitionLink xlink:role="http://dlgplc.com/xbrl/2021/roles/StatementOfChangesInEquity" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityAbstract" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DividendsPaid" xlink:label="ifrs-full_DividendsPaid" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:label="ifrs-full_EquityAttributableToOwnersOfParentMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_TreasurySharesMember" xlink:label="ifrs-full_TreasurySharesMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="ifrs-full_OtherComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_SharesDistributedByEmployeeTrusts" xlink:label="dlgplc_SharesDistributedByEmployeeTrusts" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_RetainedEarningsMember" xlink:label="ifrs-full_RetainedEarningsMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CapitalReserveMember" xlink:label="ifrs-full_CapitalReserveMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IssuedCapitalMember" xlink:label="ifrs-full_IssuedCapitalMember" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_Tier1NotesMember" xlink:label="dlgplc_Tier1NotesMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_SharesAcquiredByEmployeeTrusts" xlink:label="dlgplc_SharesAcquiredByEmployeeTrusts" />
    <loc xlink:type="locator" xlink:href="dlgplc-2021-12-31.xsd#dlgplc_AFSRevaluationReserveMember" xlink:label="dlgplc_AFSRevaluationReserveMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CancellationOfTreasuryShares" xlink:label="ifrs-full_CancellationOfTreasuryShares" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" xlink:label="ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_EquityMember" xlink:label="ifrs-full_EquityMember" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" xlink:to="ifrs-full_StatementOfChangesInEquityTable" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" priority="1" xbrldt:contextElement="scenario" xbrldt:closed="true" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityTable" xlink:to="ifrs-full_ComponentsOfEquityAxis" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_ComponentsOfEquityAxis" xlink:to="ifrs-full_EquityMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="dlgplc_AFSRevaluationReserveMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="dlgplc_Tier1NotesMember" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_CapitalReserveMember" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityMember" xlink:to="ifrs-full_EquityAttributableToOwnersOfParentMember" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:to="ifrs-full_IssuedCapitalMember" order="0" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:to="ifrs-full_RetainedEarningsMember" order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:to="ifrs-full_TreasurySharesMember" order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityAbstract" xlink:to="ifrs-full_StatementOfChangesInEquityLineItems" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_Equity" order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_ProfitLoss" order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_OtherComprehensiveIncome" order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_ComprehensiveIncome" order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_DividendsPaid" order="37" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="dlgplc_SharesAcquiredByEmployeeTrusts" order="46" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_CancellationOfTreasuryShares" order="55" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" order="64" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="dlgplc_SharesDistributedByEmployeeTrusts" order="73" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_DecreaseIncreaseThroughTaxOnSharebasedPaymentTransactions" order="82" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
    <definitionArc xlink:type="arc" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" order="91" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" priority="1" />
  </definitionLink>
</linkbase>