Structured entities - Unconsolidated Structured Entities, Total Assets (Details) - GBP (£) £ in Billions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Collective investment vehicles and limited partnerships | ||
| STRUCTURED ENTITIES (Details) - Narrative [Line Items] | ||
| Total assets of structured entities | £ 2,627 | £ 2,434 |
| Securitisation vehicles | ||
| STRUCTURED ENTITIES (Details) - Narrative [Line Items] | ||
| Total assets of structured entities | £ 4 | £ 5 |