Analysis Of Income And Expense [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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||
| Revenue [abstract] | ||||||||||||
| Revenue | — | — | — | — |
422,900,000
GBP
|
— | — | — | — |
437,000,000
GBP
|
— | — |
| Material income and expense [abstract] | ||||||||||||
| Operating expense | — | — | — | — |
380,500,000
GBP
|
— | — | — | — |
405,800,000
GBP
|
— | — |
| Miscellaneous other comprehensive income [abstract] | ||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations | — | — | — | — |
3,700,000
GBP
|
— | — | — | — |
7,700,000
GBP
|
— | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
3,700,000
GBP
|
–
GBP
|
17,400,000
GBP
|
21,100,000
GBP
|
–
GBP
|
7,700,000
GBP
|
14,600,000
GBP
|
6,900,000
GBP
|
–
GBP
|
–
GBP
|