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 |
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 | — | — |
1 ,4 49. 2
GBP
|
— | — | — | — | — | — | — |
1,327,400,000
GBP
|
— | — | — | — | — |
| Material income and expense [abstract] | ||||||||||||||||
| Sales and marketing expense | — | — |
249. 6
GBP
|
— | — | — | — | — | — | — |
2 33 .0
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 | — | — |
100,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — |
0. 2
GBP
|
— | — | — | — | — | — | — |
4 . 0
GBP
|
— | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — |
1,100,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||||
| Comprehensive income |
–
GBP
|
–
GBP
|
10 2.5
GBP
|
5,000,000
GBP
|
–
GBP
|
–
GBP
|
140 . 5
GBP
|
4 3 . 0
GBP
|
400,000
GBP
|
–
GBP
|
434,400,000
GBP
|
–
GBP
|
–
GBP
|
41 4. 2
GBP
|
19,800,000
GBP
|
–
GBP
|