v3.25.4

Tax - Narrative (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Tax expense | £ 1,904 | £ 1,494 | [1] | £ 1,985 | [1]
Income taxes paid in respect of current year profits | 1,575 |  |  |  |
Tax refunded | 200 | 970 |  | 0 |
Tax paid | 2,305 | 1,305 |  | £ 1,437 |
Deferred tax assets | £ 3,990 | £ 5,005 |  |  |
Percentage of tax loss asset expected to be recovered | 85.00% |  |  |  |
Channel Islands |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Tax expense | £ 5 |  |  |  |
Legal proceedings contingent liability |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Tax paid | 730 |  |  |  |
Increase in current tax liability | 980 |  |  |  |
Increase in deferred tax asset | £ 270 |  |  |  |
UK corporation tax: |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Applicable tax rate (in percent) | 25.00% | 25.00% |  | 23.50% |
Prior to offsetting of balances within same taxing jurisdiction |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Deferred tax assets | £ 5,734 | £ 6,900 |  | £ 7,409 |
Prior to offsetting of balances within same taxing jurisdiction | Tax losses £m |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Deferred tax assets | 4,249 | 4,650 |  | £ 4,783 |
Recognised in respect of future tax benefit |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Deferred tax assets | 0 | 104 |  |  |
UK |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Deferred tax assets operating loss carry forwards not subject to expiration | 132 | 143 |  |  |
Unused tax credits for which no deferred tax asset recognised | 526 |  |  |  |
Trading losses | 20 years |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Deferred tax assets operating loss carry forwards subject to expiration | £ 52 | 58 |  |  |
Deferred tax assets, expiration term | 20 years |  |  |  |
Trading losses | Trading losses |  |  |  |  |
DEFERRED TAX (Details) - Narrative [Line Items] |  |  |  |  |
Deferred tax assets operating loss carry forwards not subject to expiration | £ 2 | £ 8 |  |  |
[1] | 1 Comparative periods have been represented for presentational changes. See note 1.

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