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 |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||||||||
| Revenue [abstract] | ||||||||||||||||||||
| Interest income |
13 .1
GBP
|
— |
–
GBP
|
1 3 .1
GBP
|
— | — | — | — | — | — | — | — |
4,300,000
GBP
|
— | — | — |
–
GBP
|
4 .3
GBP
|
— | — |
| Revenue |
8 ,1 2 5 . 3
GBP
|
— |
282 .9
GBP
|
7, 8 4 2 . 4
GBP
|
— | — | — | — | — | — | — | — |
7,7 7 5 . 3
GBP
|
— | — | — |
3 8 3. 9
GBP
|
8 ,15 9 . 2
GBP
|
— | — |
| Material income and expense [abstract] | ||||||||||||||||||||
| Interest expense |
11 5 . 5
GBP
|
— |
0. 3
GBP
|
11 5 . 2
GBP
|
— | — | — | — | — | — | — | — |
83 .5
GBP
|
— | — | — |
0 . 4
GBP
|
8 3 .1
GBP
|
— | — |
| Operating expense |
7 11 . 7
GBP
|
— |
–
GBP
|
7 11 . 7
GBP
|
— | — | — | — | — | — | — | — |
5 4 2 . 8
GBP
|
— | — | — |
–
GBP
|
5 4 2 . 8
GBP
|
— | — |
| Expenses by nature [abstract] | ||||||||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||||||||
| Depreciation and amortisation expense [abstract] | ||||||||||||||||||||
| Depreciation expense |
1 9 5 . 6
GBP
|
— |
–
GBP
|
19 5 . 6
GBP
|
— | — | — | — | — | — | — | — |
2 0 8 . 0
GBP
|
— | — | — |
–
GBP
|
2 0 8 . 0
GBP
|
— | — |
| Amortisation expense |
2 9. 4
GBP
|
— |
–
GBP
|
29 . 4
GBP
|
— | — | — | — | — | — | — | — |
31 . 4
GBP
|
— | — | — |
–
GBP
|
31 . 4
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, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
1 0 . 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
42,400,000
GBP
|
— | — | — | — | — | — | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||||||||
| Share of profit (loss) of associates accounted for using equity method |
1. 6
GBP
|
— |
–
GBP
|
1. 6
GBP
|
— | — | — | — | — | — | — | — |
500,000
GBP
|
— | — | — |
–
GBP
|
500,000
GBP
|
— | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income |
926. 5
GBP
|
10 . 3
GBP
|
— | — |
1. 7
GBP
|
5 41 . 0
GBP
|
–
GBP
|
–
GBP
|
5,600,000
GBP
|
391,900,000
GBP
|
–
GBP
|
42,400,000
GBP
|
13 2 . 9
GBP
|
66,800,000
GBP
|
800,000
GBP
|
3 9.7
GBP
|
— | — |
1 6 . 8
GBP
|
–
GBP
|
| Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to owners of parent |
9 28.2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
13 2 .1
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract] | ||||||||||||||||||||
| Comprehensive income, attributable to non-controlling interests |
1. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
0. 8
GBP
|
— | — | — | — | — | — | — |