Statement Of Changes In Equity [Abstract]
| Concept |
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 |
As at 2024-03-31 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||
| Equity |
295,200,000
GBP
|
— |
86,100,000
GBP
|
207,900,000
GBP
|
1,200,000
GBP
|
— |
0
GBP
|
— | — | — | — |
-
GBP
|
— |
12,600,000
GBP
|
207,900,000
GBP
|
1,200,000
GBP
|
— | — | — | — |
98,700,000
GBP
|
295,200,000
GBP
|
-
GBP
|
— |
1,200,000
GBP
|
295,200,000
GBP
|
133,900,000
GBP
|
100,000
GBP
|
207,900,000
GBP
|
47,900,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — |
12,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
34,800,000
GBP
|
— | — | — | — | — | — |
| Comprehensive income | — |
-
GBP
|
— | — | — |
12,600,000
GBP
|
— |
-
GBP
|
-
GBP
|
12,600,000
GBP
|
-
GBP
|
— |
-
GBP
|
— | — | — |
-
GBP
|
-
GBP
|
34,800,000
GBP
|
-
GBP
|
— | — | — |
34,800,000
GBP
|
— | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — | — | — | — | — | — | — | — | — | — | — | — |
-
GBP
|
— | — | — |
-
GBP
|
-
GBP
|
400,000
GBP
|
-
GBP
|
— | — | — |
400,000
GBP
|
— | — | — | — | — | — |