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 |
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 | — | — | — | — | — | — | — |
188,000,000
GBP
|
— |
188,000,000
GBP
|
–
GBP
|
168,400,000
GBP
|
— | — | — | — | — | — | — | — |
168,400,000
GBP
|
–
GBP
|
| Material income and expense [abstract] | ||||||||||||||||||||||
| Finance income (cost) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Other finance income (cost) | — | — | — | — | — | — | — |
1,300,000
GBP
|
— |
400,000
GBP
|
1,700,000
GBP
|
500,000
GBP
|
— | — | — | — | — | — | — | — |
–
GBP
|
500,000
GBP
|
| Interest expense | — | — | — | — | — | — | — |
3,400,000
GBP
|
— |
3,400,000
GBP
|
–
GBP
|
2,400,000
GBP
|
— | — | — | — | — | — | — | — |
2,400,000
GBP
|
–
GBP
|
| Operating expense | — | — | — | — | — | — | — |
174,800,000
GBP
|
— |
171,300,000
GBP
|
3,500,000
GBP
|
162,000,000
GBP
|
— | — | — | — | — | — | — | — |
156,000,000
GBP
|
6,000,000
GBP
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||||
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — | — | — |
–
GBP
|
— |
–
GBP
|
–
GBP
|
200,000
GBP
|
— | — | — | — | — | — | — | — |
200,000
GBP
|
–
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income |
–
GBP
|
10,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
10,600,000
GBP
|
2,300,000
GBP
|
12,900,000
GBP
|
–
GBP
|
— | — |
6,800,000
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
6,000,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — |
10,600,000
GBP
|
— | — | — |
6,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — |
2,300,000
GBP
|
— | — | — |
800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |