Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
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 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||
| Profit (loss) |
355,800,000
GBP
|
59,400,000
GBP
|
296,400,000
GBP
|
296,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
311,000,000
GBP
|
42,200,000
GBP
|
–
GBP
|
268,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
268,800,000
GBP
|
–
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||||||
| Cash flow hedges [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, before tax, cash flow hedges | — | — |
1,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
2,100,000
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — |
7,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
3,000,000
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income | — | — |
100,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
200,000
GBP
|
— | — | — | — | — | — | — |
| Other comprehensive income | — | — |
64,800,000
GBP
|
22,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,600,000
GBP
|
–
GBP
|
–
GBP
|
37,800,000
GBP
|
6,000,000
GBP
|
1,200,000
GBP
|
— | — |
1,900,000
GBP
|
48,100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
9,000,000
GBP
|
–
GBP
|
36,000,000
GBP
|
| Comprehensive income | — | — |
231,600,000
GBP
|
273,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,600,000
GBP
|
–
GBP
|
–
GBP
|
37,800,000
GBP
|
6,000,000
GBP
|
1,200,000
GBP
|
— | — |
1,900,000
GBP
|
220,700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
259,800,000
GBP
|
–
GBP
|
36,000,000
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
231,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
220,700,000
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |