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 |
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 transactions with owners, equity |
–
GBP
|
112,000,000
GBP
|
63,700,000
GBP
|
160,600,000
GBP
|
15,100,000
GBP
|
–
GBP
|
2,400,000
GBP
|
144,700,000
GBP
|
–
GBP
|
2,200,000
GBP
|
2,100,000
GBP
|
142,400,000
GBP
|
| Purchase of treasury shares | — | — | — | — | — | — |
–
GBP
|
4 0.0
GBP
|
— |
–
GBP
|
–
GBP
|
40. 0
GBP
|
| Cancellation of treasury shares | — | — | — | — | — | — |
2,400,000
GBP
|
–
GBP
|
–
GBP
|
2,400,000
GBP
|
–
GBP
|
–
GBP
|
| Share issue related cost |
–
GBP
|
–
GBP
|
4,700,000
GBP
|
4,700,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — |