Profit Or Loss [Abstract]
| Concept |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||||||
| Profit (loss) [abstract] | ||||||||||
| Revenue | — | — | — |
3,212,800,000
GBP
|
— | — | — |
3,034,000,000
GBP
|
— | — |
| Profit (loss) from operating activities | — | — | — |
129,800,000
GBP
|
— | — | — |
65,400,000
GBP
|
— | — |
| Finance income | — | — | — |
600,000
GBP
|
— | — | — |
900,000
GBP
|
— | — |
| Finance costs | — | — | — |
4,200,000
GBP
|
— | — | — |
5,500,000
GBP
|
— | — |
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — |
5,400,000
GBP
|
— | — | — |
2,300,000
GBP
|
— | — |
| Profit (loss) before tax | — | — | — |
126,200,000
GBP
|
— | — | — |
60,800,000
GBP
|
— | — |
| Tax expense (income) | — | — | — |
28,300,000
GBP
|
— | — | — |
15,400,000
GBP
|
— | — |
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
97,900,000
GBP
|
97,900,000
GBP
|
45,400,000
GBP
|
–
GBP
|
45,400,000
GBP
|
–
GBP
|
–
GBP
|
| Profit (loss), attributable to [abstract] | ||||||||||
| Profit (loss), attributable to owners of parent | — | — | — |
97,900,000
GBP
|
— | — | — |
45,400,000
GBP
|
— | — |
| Earnings per share [text block] | — | — | — | — | — | — | — | — | — | — |
| Earnings per share [abstract] | ||||||||||
| Earnings per share [line items] | ||||||||||
| Basic earnings per share [abstract] | ||||||||||
| Basic earnings (loss) per share | — | — | — |
2
|
— | — | — |
1
|
— | — |
| Diluted earnings per share [abstract] | ||||||||||
| Diluted earnings (loss) per share | — | — | — |
2
|
— | — | — |
1
|
— | — |