Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
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 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||
| Profit (loss) |
–
GBP
|
140,200,000
GBP
|
–
GBP
|
–
GBP
|
140,200,000
GBP
|
132,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
132,200,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||
| Other comprehensive income that will not be reclassified to profit or loss, net of tax | — |
12,200,000
GBP
|
— | — | — | — | — | — | — |
189,200,000
GBP
|
| Other comprehensive income that will be reclassified to profit or loss, net of tax | — |
9,000,000
GBP
|
— | — | — | — | — | — | — |
1,900,000
GBP
|
| Other comprehensive income | — |
21,200,000
GBP
|
— | — | — | — | — | — | — |
187,300,000
GBP
|
| Comprehensive income |
9,000,000
GBP
|
161,400,000
GBP
|
–
GBP
|
–
GBP
|
152,400,000
GBP
|
57,000,000
GBP
|
1,900,000
GBP
|
–
GBP
|
–
GBP
|
55,100,000
GBP
|