Statement Of Changes In Equity [Abstract]
| Concept |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||
| Increase (decrease) through exercise of options, equity |
1,222,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
1,222,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Purchase of treasury shares |
—
GBP
|
649,000
GBP
|
—
GBP
|
—
GBP
|
16,638,000
GBP
|
—
GBP
|
15,989,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
466,000
GBP
|
—
GBP
|
1,433,000
GBP
|
—
GBP
|
—
GBP
|
967,000
GBP
|
—
GBP
|
—
GBP
|
| Sale or issue of treasury shares |
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
1,993,000
GBP
|
—
GBP
|
2,543,000
GBP
|
—
GBP
|
550,000
GBP
|
—
GBP
|
— | — | — | — | — | — | — | — | — | — |