Tax - Schedule of deferred tax assets not recognised (Details) - GBP (£) £ in Millions |
Mar. 31, 2024 |
Mar. 31, 2023 |
|---|---|---|
| Capital losses | ||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
| Deferred tax assets not recognised | £ 2,483 | £ 2,367 |
| Trading losses | ||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
| Deferred tax assets not recognised | £ 4 | £ 4 |