Statement Of Changes In Equity [Abstract]
| Concept |
As at 2025-03-31 |
2024-04-01 to 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 |
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 |
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 |
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 |
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 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 |
84,689,000
GBP
|
— |
3,168,296,000
GBP
|
— |
94,869,000
GBP
|
883,909,000
GBP
|
— |
17,422,000
GBP
|
— |
2,087,407,000
GBP
|
— |
3,073,427,000
GBP
|
— | — | — | — | — |
111,511,000
GBP
|
3,091,391,000
GBP
|
2,078,568,000
GBP
|
— |
883,890,000
GBP
|
17,422,000
GBP
|
91,641,000
GBP
|
— |
3,183,032,000
GBP
|
— | — | — | — | — | — |
2,978,091,000
GBP
|
3,058,310,000
GBP
|
883,669,000
GBP
|
17,422,000
GBP
|
80,219,000
GBP
|
1,941,223,000
GBP
|
135,777,000
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
206,490,000
GBP
|
— |
221,221,000
GBP
|
— | — |
206,490,000
GBP
|
— |
14,731,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
166,720,000
GBP
|
387,941,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
326,255,000
GBP
|
— | — | — |
340,538,000
GBP
|
— |
–
GBP
|
–
GBP
|
326,255,000
GBP
|
14,283,000
GBP
|
33,764,000
GBP
|
374,302,000
GBP
|
— | — | — | — | — | — | — |
| Other comprehensive income | — | — | — |
36,851,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
36,120,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income | — |
171,820,000
GBP
|
— |
184,370,000
GBP
|
— | — |
206,186,000
GBP
|
— |
12,550,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— | — |
34,366,000
GBP
|
33,476,000
GBP
|
— | — | — |
292,686,000
GBP
|
— | — | — |
304,418,000
GBP
|
— |
–
GBP
|
–
GBP
|
326,162,000
GBP
|
11,732,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
197,347,000
GBP
|
— |
206,669,000
GBP
|
— | — |
197,347,000
GBP
|
— |
9,322,000
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— | — |
–
GBP
|
–
GBP
|
— | — | — |
188,817,000
GBP
|
— | — | — |
189,127,000
GBP
|
— |
–
GBP
|
–
GBP
|
188,817,000
GBP
|
310,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
7,544,000
GBP
|
— |
7,544,000
GBP
|
— | — |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— |
–
GBP
|
— | — |
7,544,000
GBP
|
9,210,000
GBP
|
— | — | — |
9,210,000
GBP
|
— | — | — |
9,210,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — |