Analysis Of Income And Expense [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||||||
| Revenue | — | — | — | — | — | — |
1,583,900,000
GBP
|
— | — | — |
–
GBP
|
1,583,900,000
GBP
|
1,632,800,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,632,800,000
GBP
|
–
GBP
|
| Miscellaneous other comprehensive income [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, before tax, exchange differences on translation of foreign operations |
–
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
4,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — | — | — |
11,900,000
GBP
|
— | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — | — | — | — |
900,000
GBP
|
— | — | — | — | — |
1,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
11,900,000
GBP
|
–
GBP
|
11,000,000
GBP
|
–
GBP
|
900,000
GBP
|
–
GBP
|
— | — |
1,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,200,000
GBP
|
— | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
273,800,000
GBP
|
–
GBP
|
275,700,000
GBP
|
–
GBP
|
2,700,000
GBP
|
–
GBP
|
— | — |
234,400,000
GBP
|
–
GBP
|
1,300,000
GBP
|
228,200,000
GBP
|
–
GBP
|
4,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
3,500,000
GBP
|
— | — |
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — |
275,700,000
GBP
|
— | — | — | — | — |
235,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
1,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |