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 |
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 | — |
639,400,000
GBP
|
639,400,000
GBP
|
— |
–
GBP
|
–
GBP
|
— | — | — | — | — | — |
603 . 8
GBP
|
–
GBP
|
603 . 8
GBP
|
— | — |
| Material income and expense [abstract] | |||||||||||||||||
| Other finance income | — |
0. 7
GBP
|
700,000
GBP
|
— |
–
GBP
|
–
GBP
|
— | — | — | — | — | — |
400,000
GBP
|
–
GBP
|
400,000
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 | — |
3. 9
GBP
|
— | — | — | — | — | — | — | — | — | — |
5 . 8
GBP
|
— | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | |||||||||||||||||
| Comprehensive income |
–
GBP
|
74 . 5
GBP
|
— |
1,700,000
GBP
|
— | — |
82 . 2
GBP
|
72 .8
GBP
|
9. 4
GBP
|
–
GBP
|
78 .0
GBP
|
7. 9
GBP
|
82,000,000
GBP
|
— | — |
70,100,000
GBP
|
4,000,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | |||||||||||||||||
| Comprehensive income, attributable to owners of parent | — |
72 .8
GBP
|
— | — | — | — | — | — | — | — | — | — |
78 .0
GBP
|
— | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | |||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — |
1,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
4,000,000
GBP
|
— | — | — | — |