v3.25.4

Retirement benefit obligations - Schedule of Maturity Analysis of Benefits Expected To Be Paid (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Within 12 months |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | £ 1,816 | £ 1,800
Between 1 and 2 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 1,625 | 1,595
Between 2 and 5 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 5,229 | 5,134
Between 5 and 10 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 9,294 | 9,318
Between 10 and 15 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 8,993 | 9,150
Between 15 and 25 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 15,679 | 16,316
Between 25 and 35 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 10,382 | 11,294
Between 35 and 45 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | 4,375 | 5,171
In more than 45 years |  |
RETIREMENT BENEFIT OBLIGATIONS (Details) - Schedule of Maturity Analysis of Benefits Expected To Be Paid [Line Items] |  |
Benefits expected to be paid | £ 906 | £ 1,201

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