Analysis Of Income And Expense [Abstract]
| Concept |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||
| Revenue [abstract] | ||||||||||||||||
| Revenue | — | — |
767,800,000
GBP
|
— | — | — | — | — | — | — | — | — |
645,500,000
GBP
|
— | — | — |
| Material income and expense [abstract] | ||||||||||||||||
| Interest expense | — | — |
76,900,000
GBP
|
— | — | — | — | — | — | — | — | — |
68. 1
GBP
|
— | — | — |
| Miscellaneous other operating expense | — | — |
128,700,000
GBP
|
— | — | — | — | — | — | — | — | — |
121,500,000
GBP
|
— | — | — |
| Expenses by nature [abstract] | ||||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||||
| Impairment loss (reversal of impairment loss) recognised in profit or loss | — | — |
169,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
106,700,000
GBP
|
— | — | — |
| Expenses, by nature | — | — |
514,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
461,400,000
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
|
22,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
22,800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
41,800,000
GBP
|
–
GBP
|
–
GBP
|
41,800,000
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 | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
900,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — |
800,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income |
–
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
1,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
–
GBP
|
–
GBP
|
1,700,000
GBP
|
–
GBP
|
900,000
GBP
|
–
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
73,800,000
GBP
|
–
GBP
|
0. 1
GBP
|
50,900,000
GBP
|
–
GBP
|
22,800,000
GBP
|
–
GBP
|
1,500,000
GBP
|
–
GBP
|
–
GBP
|
94,200,000
GBP
|
–
GBP
|
53,900,000
GBP
|
41,800,000
GBP
|