Auditor's remuneration - Narrative (Details) - GBP (£) £ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of products and services [line items] | |||
| Audit and audit related fees | £ 22 | £ 23 | £ 22 |
| KPMG | |||
| Disclosure of products and services [line items] | |||
| Audit and audit related fees | 45 | 43 | 41 |
| Other services | 3 | 1 | 1 |
| Tax fees | 0 | 0 | 0 |
| Audit fee relating to previous year | |||
| Disclosure of products and services [line items] | |||
| Other services | 0 | 0 | 1 |
| Other audit related fees | |||
| Disclosure of products and services [line items] | |||
| Audit and audit related fees | 12 | 10 | 8 |
| Other audit related fees | KPMG | |||
| Disclosure of products and services [line items] | |||
| Audit and audit related fees | £ 9 | £ 5 | £ 5 |