Analysis Of Income And Expense [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 |
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 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Revenue | — | — |
382,393,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
374,807,000
GBP
|
| Material income and expense [abstract] | ||||||||||||||
| Gains (losses) on disposals of property, plant and equipment [abstract] | ||||||||||||||
| Gains on disposals of property, plant and equipment | — | — |
1,114,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
–
GBP
|
| Operating expense | — | — |
128,411,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
124,597,000
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 | — | — |
1,065,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
779,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income |
1,065,000
GBP
|
–
GBP
|
47,650,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
48,715,000
GBP
|
41,645,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
779,000
GBP
|
42,424,000
GBP
|