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 |
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 |
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 | — | — | — | — | — | — | — |
6,725,800,000
GBP
|
— | — | — | — |
5,441,300,000
GBP
|
— | — | — | — | — |
| Cost of sales | — | — | — | — | — | — | — |
5,858,000,000
GBP
|
— | — | — | — |
4,720,800,000
GBP
|
— | — | — | — | — |
| Gross profit | — | — | — | — | — | — | — |
867,800,000
GBP
|
— | — | — | — |
720,500,000
GBP
|
— | — | — | — | — |
| Administrative expenses | — | — | — | — | — | — | — |
612,000,000
GBP
|
— | — | — | — |
521,600,000
GBP
|
— | — | — | — | — |
| Profit (loss) from operating activities | — | — | — | — | — | — | — |
255,200,000
GBP
|
— | — | — | — |
198,500,000
GBP
|
— | — | — | — | — |
| Finance income | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — |
500,000
GBP
|
— | — | — | — | — |
| Finance costs | — | — | — | — | — | — | — |
7,500,000
GBP
|
— | — | — | — |
6,400,000
GBP
|
— | — | — | — | — |
| Profit (loss) before tax | — | — | — | — | — | — | — |
248,000,000
GBP
|
— | — | — | — |
206,600,000
GBP
|
— | — | — | — | — |
| Tax expense (income) | — | — | — | — | — | — | — |
61,500,000
GBP
|
— | — | — | — |
52,400,000
GBP
|
— | — | — | — | — |
| Profit (loss) |
1,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
185,300,000
GBP
|
186,500,000
GBP
|
185,300,000
GBP
|
153,800,000
GBP
|
–
GBP
|
–
GBP
|
154,200,000
GBP
|
400,000
GBP
|
–
GBP
|
–
GBP
|
153,800,000
GBP
|
–
GBP
|
| Profit (loss), attributable to [abstract] | ||||||||||||||||||
| Profit (loss), attributable to owners of parent | — | — | — | — | — | — | — |
185,300,000
GBP
|
— | — | — | — |
153,800,000
GBP
|
— | — | — | — | — |
| Profit (loss), attributable to non-controlling interests | — | — | — | — | — | — | — |
1,200,000
GBP
|
— | — | — | — |
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 | — | — | — | — | — | — | — |
1.640
|
— | — | — | — |
1.362
|
— | — | — | — | — |
| Diluted earnings per share [abstract] | ||||||||||||||||||
| Diluted earnings (loss) per share | — | — | — | — | — | — | — |
1.609
|
— | — | — | — |
1.338
|
— | — | — | — | — |