Allowance for expected credit losses - Climate Consideration On ECL (Details) - Maximum - GBP (£) £ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Total Retail | Scenario risk – macro level | ||
| Schedule Of Allowance Account For Credit Losses Of Financial Assets [Line Items] | ||
| ECL impact | £ 10 | £ 5 |
| Commercial Banking | Scenario risk – sector level | ||
| Schedule Of Allowance Account For Credit Losses Of Financial Assets [Line Items] | ||
| ECL impact | 15 | 15 |
| Retail – UK mortgages | Transition risk | ||
| Schedule Of Allowance Account For Credit Losses Of Financial Assets [Line Items] | ||
| ECL impact | 10 | 10 |
| Retail – UK mortgages | Physical risk | ||
| Schedule Of Allowance Account For Credit Losses Of Financial Assets [Line Items] | ||
| ECL impact | £ 5 | £ 5 |