Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||
| Increase (decrease) through disposal of subsidiary, equity |
–
GBP
|
–
GBP
|
–
GBP
|
700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
700,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Decrease (increase) through tax on share-based payment transactions, equity |
–
GBP
|
–
GBP
|
4,500,000
GBP
|
4,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
| Purchase of treasury shares |
–
GBP
|
–
GBP
|
12,500,000
GBP
|
12,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
12,500,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — |