Statement Of Changes In Equity [Abstract]
| Concept |
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 |
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 |
As at 2024-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||
| Equity |
1 , 4 0 0 .0
GBP
|
— |
900,000
GBP
|
— |
1 , 7 4 7. 6
GBP
|
9,600,000
GBP
|
–
GBP
|
0. 4
GBP
|
— |
368,200,000
GBP
|
— | — | — | — | — |
9 .7
GBP
|
— | — | — |
0. 5
GBP
|
— |
40 4.2
GBP
|
10,000,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
1 ,7 82 . 2
GBP
|
1 , 4 0 0 . 0
GBP
|
12 .5
GBP
|
— |
–
GBP
|
–
GBP
|
1 , 4 0 0 . 0
GBP
|
0. 1
GBP
|
10,000,000
GBP
|
7. 0
GBP
|
1 ,711 .3
GBP
|
32 8.2
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
–
GBP
|
— |
–
GBP
|
— | — | — | — |
69. 2
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
69. 2
GBP
|
–
GBP
|
— |
–
GBP
|
128 .9
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
1 28.9
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Other comprehensive income | — |
–
GBP
|
— |
1 .4
GBP
|
— | — | — | — |
0 .9
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
500,000
GBP
|
2 . 8
GBP
|
— |
–
GBP
|
5,100,000
GBP
|
–
GBP
|
— |
0. 4
GBP
|
— | — | — | — |
5,500,000
GBP
|
–
GBP
|
–
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Comprehensive income | — |
–
GBP
|
— |
1,400,000
GBP
|
— | — | — | — |
68,300,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
6 9.7
GBP
|
2 . 8
GBP
|
— |
–
GBP
|
13 4.0
GBP
|
–
GBP
|
— |
0. 4
GBP
|
— | — | — | — |
5,500,000
GBP
|
–
GBP
|
1 28.9
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Issue of equity | — |
–
GBP
|
— |
–
GBP
|
— | — | — | — |
–
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
–
GBP
|
— |
–
GBP
|
— | — | — | — |
5 7 . 8
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
5 7 . 8
GBP
|
–
GBP
|
— |
–
GBP
|
5 8 . 4
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
5 8 . 4
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
–
GBP
|
— |
–
GBP
|
— | — | — | — |
4 .0
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
4,000,000
GBP
|
–
GBP
|
— |
–
GBP
|
400,000
GBP
|
–
GBP
|
— |
–
GBP
|
— | — | — | — |
–
GBP
|
–
GBP
|
0 .4
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |