Statement Of Changes In Equity [Abstract]
| Concept |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 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 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 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 |
As at 2024-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
1,000,000
GBP
|
162 . 2
GBP
|
— |
700,000
GBP
|
1. 9
GBP
|
— |
25,800,000
GBP
|
135,400,000
GBP
|
— |
0 . 4
GBP
|
— | — | — | — | — |
2 . 2
GBP
|
— |
1 .0
GBP
|
— | — |
1 4 7. 6
GBP
|
1,900,000
GBP
|
— |
25,800,000
GBP
|
— |
175 .7
GBP
|
0. 7
GBP
|
0. 2
GBP
|
— | — | — | — | — | — |
1. 5
GBP
|
184,600,000
GBP
|
1,900,000
GBP
|
25,800,000
GBP
|
0. 3
GBP
|
156. 2
GBP
|
1,000,000
GBP
|
1. 3
GBP
|
0. 7
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
— | — |
1. 1
GBP
|
— | — |
1. 1
GBP
|
— | — |
–
GBP
|
— |
7. 2
GBP
|
6 .1
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
7,100,000
GBP
|
— | — |
–
GBP
|
— |
2,700,000
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
9,800,000
GBP
|
–
GBP
|
2 .7
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Other comprehensive income |
–
GBP
|
— | — |
1. 2
GBP
|
— | — |
0 .1
GBP
|
— | — |
–
GBP
|
— | — | — |
600,000
GBP
|
–
GBP
|
–
GBP
|
— |
700,000
GBP
|
— |
–
GBP
|
— | — | — |
0 .1
GBP
|
— |
0. 3
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
–
GBP
|
0. 2
GBP
|
— | — | — | — | — | — | — | — | — |
| Comprehensive income |
–
GBP
|
— | — |
2 .3
GBP
|
— | — |
1,000,000
GBP
|
— | — |
–
GBP
|
— | — | — |
600,000
GBP
|
–
GBP
|
–
GBP
|
— |
700,000
GBP
|
— |
–
GBP
|
— | — | — |
0 .1
GBP
|
— |
2 .4
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
2 .7
GBP
|
0. 2
GBP
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners |
–
GBP
|
— | — |
11 .8
GBP
|
— | — |
1 1.8
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
11,800,000
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
11,800,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
–
GBP
|
— | — |
600,000
GBP
|
— | — |
600,000
GBP
|
— | — |
–
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— | — | — |
–
GBP
|
— |
0. 5
GBP
|
— | — | — |
–
GBP
|
–
GBP
|
— |
–
GBP
|
500,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |