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 |
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] | ||||||||||||
| Material income and expense [abstract] | ||||||||||||
| Other operating income (expense) | — |
1,000,000
GBP
|
— | — | — | — | — | — |
1,000,000
GBP
|
— | — | — |
| Expenses by nature [abstract] | ||||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||||
| Employee benefits expense | — |
214,600,000
GBP
|
— | — | — | — | — | — |
132,500,000
GBP
|
— | — | — |
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||
| Depreciation and amortisation expense [abstract] | ||||||||||||
| Depreciation and amortisation expense | — |
36,200,000
GBP
|
— | — | — | — | — | — |
18,700,000
GBP
|
— | — | — |
| Other expenses, by nature | — |
67,300,000
GBP
|
— | — | — | — | — | — |
92,000,000
GBP
|
— | — | — |
| Disclosure of attribution of expenses by nature to their function [text block] | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of attribution of expenses by nature to their function [abstract] | ||||||||||||
| Disclosure of attribution of expenses by nature to their function [line items] | ||||||||||||
| 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 | — |
10,600,000
GBP
|
— | — | — | — | — | — |
5,800,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — |
3,300,000
GBP
|
— | — | — | — | — | — |
2,200,000
GBP
|
— | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||
| Comprehensive income |
7,400,000
GBP
|
90,600,000
GBP
|
–
GBP
|
–
GBP
|
21,600,000
GBP
|
61,600,000
GBP
|
83,200,000
GBP
|
–
GBP
|
72,700,000
GBP
|
68,500,000
GBP
|
–
GBP
|
4,200,000
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||
| Comprehensive income, attributable to owners of parent | — |
83,200,000
GBP
|
— | — | — | — | — | — |
72,700,000
GBP
|
— | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||
| Comprehensive income, attributable to non-controlling interests | — |
7,400,000
GBP
|
— | — | — | — | — | — |
–
GBP
|
— | — | — |