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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:e6b15329-275d-480c-a9b2-d9e57d1658c6,g:59c7de56-00ec-4d98-88da-408fc3653c6b-->
<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_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod_0937b05c-2f41-462f-a501-d9ca840d48a5_negatedLabel_en" xlink:label="lab_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Adjustments for undistributed profits of investments accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod" xlink:to="lab_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilities_c6c1cc47-0dc2-44fe-a021-d12efb13571d_negatedTotalLabel_en" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en">Current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="lab_ifrs-full_CurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities_8b0b9922-2c1d-40f2-af24-4b2930c7ee1b_negatedLabel_en" xlink:label="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of property, plant and equipment, and investment property classified as investing activities</link:label>
    <link:label id="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities_label_en" xlink:label="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Purchase of property, plant and equipment, and investment property classified as investing activities</link:label>
    <link:label id="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities_documentation_en" xlink:label="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:to="lab_baesystemsplc_PurchaseOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities_label_en" xlink:label="lab_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Principal element of finance lease receipts classified as investing activities</link:label>
    <link:label id="lab_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities_documentation_en" xlink:label="lab_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities" xlink:to="lab_baesystemsplc_PrincipalElementOfFinanceLeaseReceiptsClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentContractLiabilities_5b3ace48-b1cf-45fd-9878-9d5a63b8561c_negatedLabel_en" xlink:label="lab_ifrs-full_NoncurrentContractLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Non-current contract liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentContractLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentContractLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentContractLiabilities" xlink:to="lab_ifrs-full_NoncurrentContractLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLiabilities_b858c825-3ab9-4c5b-9648-217e2194157d_negatedTotalLabel_en" xlink:label="lab_ifrs-full_NoncurrentLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en">Non-current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="lab_ifrs-full_NoncurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentProvisions_190f4f3b-7405-4414-9c55-144c1f7f66fd_negatedLabel_en" xlink:label="lab_ifrs-full_CurrentProvisions" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Current provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentProvisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentProvisions" xlink:to="lab_ifrs-full_CurrentProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentProvisions_21f9a02b-2b62-41cb-9a0e-2c964c287561_negatedLabel_en" xlink:label="lab_ifrs-full_NoncurrentProvisions" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Non-current provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentProvisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentProvisions" xlink:to="lab_ifrs-full_NoncurrentProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForFinanceIncomeCost_a6255ba6-0c93-4cde-9a63-a876474ace26_negatedLabel_en" xlink:label="lab_ifrs-full_AdjustmentsForFinanceIncomeCost" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Adjustments for finance income (cost)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForFinanceIncomeCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForFinanceIncomeCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForFinanceIncomeCost" xlink:to="lab_ifrs-full_AdjustmentsForFinanceIncomeCost" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_6399ac55-c99d-4f99-a0a6-57e7d8b35370_negatedLabel_en" xlink:label="lab_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Income taxes paid (refund), classified as operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:to="lab_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_fce20a55-f500-4306-a001-153aa5c3bc26_negatedLabel_en" xlink:label="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">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/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_ifrs-full_LongtermBorrowings_76adaacc-2788-4add-8e03-c8e5fafff5e3_negatedLabel_en" xlink:label="lab_ifrs-full_LongtermBorrowings" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Non-current portion of non-current borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LongtermBorrowings" xlink:to="lab_ifrs-full_LongtermBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_8d8d46e7-e88a-40db-99e9-d335845776b4_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_NoncurrentLeaseLiabilities_ecff92f9-49cf-4b59-b9e7-e35c4c42145f_negatedLabel_en" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Non-current lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_TradeAndOtherCurrentPayables_b4adfdc6-0a1b-407b-9e6f-4597b68f9661_negatedLabel_en" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayables" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Trade and other current payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeAndOtherCurrentPayables" xlink:to="lab_ifrs-full_TradeAndOtherCurrentPayables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan_440bf8bb-9987-429f-a85f-0943c669df31_negatedLabel_en" xlink:label="lab_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Non-current net defined benefit liability</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:to="lab_ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_DisclosureOfBusinessDisposals_label_en" xlink:label="lab_baesystemsplc_DisclosureOfBusinessDisposals" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Disclosure of business disposals [Text Block]</link:label>
    <link:label id="lab_baesystemsplc_DisclosureOfBusinessDisposals_documentation_en" xlink:label="lab_baesystemsplc_DisclosureOfBusinessDisposals" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Disclosure of business disposals</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_DisclosureOfBusinessDisposals" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_DisclosureOfBusinessDisposals"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_DisclosureOfBusinessDisposals" xlink:to="lab_baesystemsplc_DisclosureOfBusinessDisposals" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_ce64a4ec-9d35-4cad-b07d-d853c64b478c_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_019c288b-48cb-70ee-af18-663189c34f76_negatedLabel_en" xlink:label="lab_ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of investments other than investments accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:to="lab_ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentContractLiabilities_1870cd03-69a7-40ea-9857-2f4943e79c93_negatedLabel_en" xlink:label="lab_ifrs-full_CurrentContractLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Current contract liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentContractLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentContractLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentContractLiabilities" xlink:to="lab_ifrs-full_CurrentContractLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty_7b80f65a-dcfd-48ad-8dbe-2fa1e6240599_negatedLabel_en" xlink:label="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Adjustments for gain on disposal of property, plant and equipment, and investment property</link:label>
    <link:label id="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty_label_en" xlink:label="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Adjustments for gain (loss) on disposal of property, plant and equipment, and investment property</link:label>
    <link:label id="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty_documentation_en" xlink:label="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty" xlink:to="lab_baesystemsplc_AdjustmentsForGainLossOnDisposalOfPropertyPlantAndEquipmentAndInvestmentProperty" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss_3a9ca913-f123-421d-a00b-9ca8ef89342c_negatedLabel_en" xlink:label="lab_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Income tax relating to components of other comprehensive income that will be reclassified to profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:to="lab_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DeferredTaxLiabilities_bfbbdc46-b4f5-493a-a5f3-bb3d4dfff517_negatedLabel_en" xlink:label="lab_ifrs-full_DeferredTaxLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Deferred tax liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities_label_en" xlink:label="lab_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Description of accounting policy for contract receivables and contract liabilities [Text Block]</link:label>
    <link:label id="lab_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities_documentation_en" xlink:label="lab_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Description of accounting policy for contract receivables and contract liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities" xlink:to="lab_baesystemsplc_DescriptionOfAccountingPolicyForContractReceivablesAndContractLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_cc3b45d9-607a-4b72-bdf7-744d8bdae53e_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">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/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_d94e2b51-238e-4e5e-9ad7-eb2f49bf3b47_negatedLabel_en" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Repayments of borrowings, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss_686e17d1-62f6-478d-b1a2-ceca1ffb6893_negatedLabel_en" xlink:label="lab_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" xlink:to="lab_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Liabilities_10e7cee2-a401-481b-b540-c4de86abf34a_negatedTotalLabel_en" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en">Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Liabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_ifrs-full_OperatingExpense_ee909089-ade8-40a0-92f0-50a796175034_negatedLabel_en" xlink:label="lab_ifrs-full_OperatingExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Operating expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="lab_ifrs-full_OperatingExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinanceIncomeCost_66e4ae4c-1057-4929-83ad-a054b11c3d61_totalLabel_en" xlink:label="lab_ifrs-full_FinanceIncomeCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Finance income (cost)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncomeCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FinanceIncomeCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="lab_ifrs-full_FinanceIncomeCost" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_33638570-edc5-484b-b5d5-92ced6c9e9bf_negatedLabel_en" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Tax expense (income)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:to="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities_f7b7af5d-7030-4d8b-beb4-d5a170a37e3b_negatedLabel_en" xlink:label="lab_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Dividends paid to non-controlling interests, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_eecf0255-299d-4fcc-a791-907d861960be_negatedLabel_en" xlink:label="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_aeda90b3-dd93-4163-8c26-c644a231de27_negatedLabel_en" xlink:label="lab_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of intangible assets, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLeaseLiabilities_4cdd39f3-316e-4438-ad42-38ea86241444_negatedLabel_en" xlink:label="lab_ifrs-full_CurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Current lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLeaseLiabilities" xlink:to="lab_ifrs-full_CurrentLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates_00e054c3-a3d1-4aba-9194-e1d88a2dacb7_negatedLabel_en" xlink:label="lab_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates" xlink:to="lab_ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ShorttermBorrowings_b0143b55-276d-4bcb-9d57-9b773a6bd768_negatedLabel_en" xlink:label="lab_ifrs-full_ShorttermBorrowings" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Current borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShorttermBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ShorttermBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ShorttermBorrowings" xlink:to="lab_ifrs-full_ShorttermBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NetAssetsLiabilities_3025a9aa-f4cf-4ea5-bbbe-f44e64fbc3e7_totalLabel_en" xlink:label="lab_ifrs-full_NetAssetsLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Assets (liabilities)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetAssetsLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NetAssetsLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NetAssetsLiabilities" xlink:to="lab_ifrs-full_NetAssetsLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities_label_en" xlink:label="lab_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Proceeds from sale of property, plant and equipment, and investment property classified as investing activities</link:label>
    <link:label id="lab_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities_documentation_en" xlink:label="lab_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:to="lab_baesystemsplc_ProceedsFromSaleOfPropertyPlantAndEquipmentAndInvestmentPropertyClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures_3f1a3112-ce8b-464a-aeca-60fcd466b8e2_negatedLabel_en" xlink:label="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Repayments of bonds, notes and debentures</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RepaymentsOfBondsNotesAndDebentures"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:to="lab_ifrs-full_RepaymentsOfBondsNotesAndDebentures" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities_ad61f35b-345a-4aa4-aa23-8493e55fcbaf_negatedLabel_en" xlink:label="lab_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Dividends paid to equity holders of parent, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities_12054cba-877b-475a-a2f7-f4b803c5cb1a_negatedLabel_en" xlink:label="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Cash outflow from derivative financial instruments (excluding cash flow hedges) classified as financing activities</link:label>
    <link:label id="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities_label_en" xlink:label="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Cash outflow from derivative financial instruments (excluding cash flow hedges) classified as financing activities</link:label>
    <link:label id="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities_documentation_en" xlink:label="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:to="lab_baesystemsplc_CashOutflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities_edebc181-6a91-456d-99bc-c590571e4dc9_negatedLabel_en" xlink:label="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Interest paid, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_e6196e67-6300-46ef-87d9-be6df4e240c0_totalLabel_en" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Increase (decrease) in cash and cash equivalents before effect of exchange rate changes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges"/>
    <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_OtherNoncurrentPayables_d78e5563-cfde-42a1-a809-0f1d7d41fc38_negatedLabel_en" xlink:label="lab_ifrs-full_OtherNoncurrentPayables" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Other non-current payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentPayables" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentPayables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherNoncurrentPayables" xlink:to="lab_ifrs-full_OtherNoncurrentPayables" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities_label_en" xlink:label="lab_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Cash inflow from derivative financial instruments (excluding cash flow hedges) classified as financing activities</link:label>
    <link:label id="lab_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities_documentation_en" xlink:label="lab_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:to="lab_baesystemsplc_CashInflowFromDerivativeFinancialInstrumentsExcludingCashFlowHedgesClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod_019c288a-2396-78a6-b0eb-9d6904aa3405_negatedLabel_en" xlink:label="lab_ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of interests in investments accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" xlink:to="lab_ifrs-full_PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits_label_en" xlink:label="lab_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Adjustment in respect of research and development expenditure credits</link:label>
    <link:label id="lab_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits_documentation_en" xlink:label="lab_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en"></link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits" xlink:to="lab_baesystemsplc_AdjustmentsForResearchAndDevelopmentExpenditureCredits" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_31038beb-2c31-4323-ae82-df3d41b376f2_negatedLabel_en" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Current tax liabilities, current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.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_baesystemsplc_ComprehensiveIncomeOtherReserves_label_en" xlink:label="lab_baesystemsplc_ComprehensiveIncomeOtherReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Comprehensive Income Other Reserves [Member]</link:label>
    <link:label id="lab_baesystemsplc_ComprehensiveIncomeOtherReserves_documentation_en" xlink:label="lab_baesystemsplc_ComprehensiveIncomeOtherReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">components of equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_ComprehensiveIncomeOtherReserves" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_ComprehensiveIncomeOtherReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_ComprehensiveIncomeOtherReserves" xlink:to="lab_baesystemsplc_ComprehensiveIncomeOtherReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_baesystemsplc_ComprehensiveIncomeRetainedEarnings_label_en" xlink:label="lab_baesystemsplc_ComprehensiveIncomeRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Comprehensive Income Retained Earnings [Member]</link:label>
    <link:label id="lab_baesystemsplc_ComprehensiveIncomeRetainedEarnings_documentation_en" xlink:label="lab_baesystemsplc_ComprehensiveIncomeRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">components of equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_baesystemsplc_ComprehensiveIncomeRetainedEarnings" xlink:href="8SVCSVKSGDWMW2QHOH83-2025-12-31.xsd#baesystemsplc_ComprehensiveIncomeRetainedEarnings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_baesystemsplc_ComprehensiveIncomeRetainedEarnings" xlink:to="lab_baesystemsplc_ComprehensiveIncomeRetainedEarnings" xlink:type="arc" order="1"/>
  </link:labelLink>
</link:linkbase>
