Analysis Of Income And Expense [Abstract]
| Concept |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||
| Revenue [abstract] | ||||||||||||||||
| Revenue | — | — | — |
603,800,000
GBP
|
–
GBP
|
603,800,000
GBP
|
— | — |
443,300,000
GBP
|
— |
–
GBP
|
— | — | — |
443,300,000
GBP
|
— |
| Material income and expense [abstract] | ||||||||||||||||
| Other finance income | — | — | — |
0. 4
GBP
|
–
GBP
|
0. 4
GBP
|
— | — |
100,000
GBP
|
— |
–
GBP
|
— | — | — |
0 .1
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 | — | — | — |
5 . 8
GBP
|
— | — | — | — | — | — | — | — | — | — |
2. 6
GBP
|
— |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income |
–
GBP
|
7 8.0
GBP
|
7. 9
GBP
|
82,000,000
GBP
|
— | — |
70,100,000
GBP
|
4 .0
GBP
|
— |
4,300,000
GBP
|
— |
2,700,000
GBP
|
–
GBP
|
52,900,000
GBP
|
5 7. 2
GBP
|
55,600,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — |
78 .0
GBP
|
— | — | — | — | — | — | — | — | — | — |
52,900,000
GBP
|
— |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — |
4,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
4,300,000
GBP
|
— |