Statement Of Changes In Equity [Abstract]
| Concept |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 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 |
2024-04-01 to 2025-03-31 |
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 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
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 , 22 1
GBP
|
5 33 , 378
GBP
|
— | — |
164,400,000
GBP
|
3 7 0, 199
GBP
|
— | — | — |
4 5 3
GBP
|
360, 528
GBP
|
164,400,000
GBP
|
— |
52 4 , 475
GBP
|
— | — |
547 ,624
GBP
|
164,400,000
GBP
|
384,406,000
GBP
|
1,1 82
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) | — | — |
3 7, 3 2 3
GBP
|
3 7, 3 2 3
GBP
|
— | — |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
4 ,7 8 9
GBP
|
— |
–
GBP
|
4,7 8 9
GBP
|
— | — | — | — |
| Comprehensive income | — | — |
3 7, 3 2 3
GBP
|
— | — | — | — | — | — | — | — | — |
4 ,7 8 9
GBP
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — |
20,159,000
GBP
|
20,159,000
GBP
|
— | — |
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
1 9,08 9
GBP
|
— |
–
GBP
|
19,0 89
GBP
|
— | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — |
751,000
GBP
|
–
GBP
|
— | — |
–
GBP
|
75 1
GBP
|
729,000
GBP
|
— | — | — |
729,000
GBP
|
— |
–
GBP
|
–
GBP
|
— | — | — | — |