v3.25.4

Retirement benefit obligations - Schedule of Composition of Scheme Assets (Details) - GBP (£) £ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt instruments |  |
Corporate and other debt securities | £ 9,771 | £ 7,396
Asset-backed securities | 3 | 0
Debt instruments, percentage contributed to fair value of plan assets | 31,482 | 29,931
Pooled investment vehicles | 6,617 | 8,028
Property | 132 | 130
Equity instruments | 71 | 89
Money market instruments, cash, derivatives and other assets and liabilities | (9,119) | (8,115)
At 31 December | 29,183 | 30,063
Quoted £m |  |
Debt instruments |  |
Corporate and other debt securities | 9,771 | 7,396
Asset-backed securities | 3 | 0
Debt instruments, percentage contributed to fair value of plan assets | 31,482 | 29,931
Pooled investment vehicles | 653 | 686
Property | 0 | 0
Equity instruments | 12 | 23
Money market instruments, cash, derivatives and other assets and liabilities | 135 | 55
At 31 December | 32,282 | 30,695
Unquoted £m |  |
Debt instruments |  |
Corporate and other debt securities | 0 | 0
Asset-backed securities | 0 | 0
Debt instruments, percentage contributed to fair value of plan assets | 0 | 0
Pooled investment vehicles | 5,964 | 7,342
Property | 132 | 130
Equity instruments | 59 | 66
Money market instruments, cash, derivatives and other assets and liabilities | (9,254) | (8,170)
At 31 December | (3,099) | (632)
Fixed interest government bonds |  |
Debt instruments |  |
Government securities | 6,326 | 6,985
Fixed interest government bonds | Quoted £m |  |
Debt instruments |  |
Government securities | 6,326 | 6,985
Fixed interest government bonds | Unquoted £m |  |
Debt instruments |  |
Government securities | 0 | 0
Index-linked government bonds |  |
Debt instruments |  |
Government securities | 15,382 | 15,550
Index-linked government bonds | Quoted £m |  |
Debt instruments |  |
Government securities | 15,382 | 15,550
Index-linked government bonds | Unquoted £m |  |
Debt instruments |  |
Government securities | 0 | 0
Investment grade |  |
Debt instruments |  |
Debt instruments, percentage contributed to fair value of plan assets | £ 29,876 | £ 27,551

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- Definition The amount of debt instruments, including instruments called debt securities, held by the entity that were issued by a corporate entity. [Refer: Debt instruments held] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 142 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_c&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 208 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208_b&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 208 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208_b&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount instruments representing equity (rather than debt) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 142 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_142_b&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 208 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208_a&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 208 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_208_a&doctype=Standard -URIDate 2025-03-27 + Details
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