<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:b77b8436-91d3-4da9-9b7f-dc172de4e77b,g:55968d97-048a-46a5-b3f0-ff169ffb2336-->
<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"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel"/>
  <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_bcs_RiservaUtiliSuCambiNonRealizzatiMember_label_it" xlink:label="lab_bcs_RiservaUtiliSuCambiNonRealizzatiMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="it">Riserva utili su cambi non realizzati [Member]</link:label>
    <link:label id="lab_bcs_RiservaUtiliSuCambiNonRealizzatiMember_documentation_it" xlink:label="lab_bcs_RiservaUtiliSuCambiNonRealizzatiMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="it">Riserva utili su cambi non realizzati</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_bcs_RiservaUtiliSuCambiNonRealizzatiMember" xlink:href="bcs-2024-12-31.xsd#bcs_RiservaUtiliSuCambiNonRealizzatiMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcs_RiservaUtiliSuCambiNonRealizzatiMember" xlink:to="lab_bcs_RiservaUtiliSuCambiNonRealizzatiMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_183d1514-bb90-435c-9aa5-e3859e0d414a_totalLabel_it" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="it">Cash flows from (used in) operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_bcs_UtileBaseEDiluitoPerAzioneAbstract_label_it" xlink:label="lab_bcs_UtileBaseEDiluitoPerAzioneAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="it">Utile base e diluito per azione [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_bcs_UtileBaseEDiluitoPerAzioneAbstract" xlink:href="bcs-2024-12-31.xsd#bcs_UtileBaseEDiluitoPerAzioneAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcs_UtileBaseEDiluitoPerAzioneAbstract" xlink:to="lab_bcs_UtileBaseEDiluitoPerAzioneAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_bcs_OneriFinanziariDiCuiVersoPartiCorrelate_label_it" xlink:label="lab_bcs_OneriFinanziariDiCuiVersoPartiCorrelate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="it">Oneri finanziari di cui verso parti Correlate</link:label>
    <link:label id="lab_bcs_OneriFinanziariDiCuiVersoPartiCorrelate_documentation_it" xlink:label="lab_bcs_OneriFinanziariDiCuiVersoPartiCorrelate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="it">Oneri finanziari di cui verso parti Correlate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_bcs_OneriFinanziariDiCuiVersoPartiCorrelate" xlink:href="bcs-2024-12-31.xsd#bcs_OneriFinanziariDiCuiVersoPartiCorrelate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcs_OneriFinanziariDiCuiVersoPartiCorrelate" xlink:to="lab_bcs_OneriFinanziariDiCuiVersoPartiCorrelate" xlink:type="arc" order="1"/>
    <link:label id="lab_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_label_it" xlink:label="lab_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="it">Proceeds from sales of (purchase of) investments other than investments accounted for using equity method</link:label>
    <link:label id="lab_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_documentation_it" xlink:label="lab_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="it">Proceeds from sales of (purchase of) investments other than investments accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:href="bcs-2024-12-31.xsd#bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:to="lab_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_32428e85-196e-4f28-b7b3-1c8072681f4f_totalLabel_it" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="it">Flussi di cassa da (utilizzati in) attività di finanziamento</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_4ac1c95e-8829-409e-98e9-c306fb6aa529_totalLabel_it" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="it">Flussi di cassa da (utilizzati in) attività di investimento</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_d657fa65-e35c-469e-bec3-edbd9b5c9e12_totalLabel_it" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="it">Aumento (diminuzione) di disponibilità liquide e mezzi equivalenti</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate_label_it" xlink:label="lab_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="it">Passivita Finanziarie A Breve Termine Per Diritti Duso Di Cui Verso Parti Correlate</link:label>
    <link:label id="lab_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate_documentation_it" xlink:label="lab_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="it">Passività finanziarie a breve termine per diritti d'uso di cui verso parti Correlate - Current lease liabilities payable to related parties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate" xlink:href="bcs-2024-12-31.xsd#bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate" xlink:to="lab_bcs_PassivitaFinanziarieABreveTerminePerDirittiDusoDiCuiVersoPartiCorrelate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperations_3dfae053-9c6d-45ab-b584-23909c45f416_totalLabel_it" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="it">Cash flows from (used in) operations</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperations" xlink:type="arc" order="1"/>
  </link:labelLink>
</link:linkbase>
