Disclosure Of Effect Of Changes In Foreign Exchange Rates [Text Block]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 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 |
As at 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of effect of changes in foreign exchange rates [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of information when currency is not exchangeable into another currency [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of information when foreign operation’s functional currency is not exchangeable into presentation currency [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of summarised financial information about foreign operation [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of summarised financial information about foreign operation [abstract] | ||||||||||||||||||||
| Disclosure of summarised financial information about foreign operation [line items] | ||||||||||||||||||||
| Non-current assets | — | — | — |
548,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
545,100,000
GBP
|
— | — | — | — | — |
| Current assets | — | — | — |
2,165,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
1,856,800,000
GBP
|
— | — | — | — | — |
| Non-current liabilities | — | — | — |
185,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
184,800,000
GBP
|
— | — | — | — | — |
| Current liabilities | — | — | — |
1,783,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
1,586,200,000
GBP
|
— | — | — | — | — |
| Revenue | — | — | — | — | — | — | — | — |
6,725,800,000
GBP
|
— |
5,441,300,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Profit (loss) |
1,200,000
GBP
|
–
GBP
|
185,300,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
186,500,000
GBP
|
185,300,000
GBP
|
154,200,000
GBP
|
–
GBP
|
153,800,000
GBP
|
–
GBP
|
— |
–
GBP
|
400,000
GBP
|
–
GBP
|
153,800,000
GBP
|
–
GBP
|
| Other comprehensive income |
–
GBP
|
–
GBP
|
9,100,000
GBP
|
— |
–
GBP
|
–
GBP
|
10,300,000
GBP
|
–
GBP
|
9,100,000
GBP
|
1,200,000
GBP
|
2,700,000
GBP
|
–
GBP
|
4,400,000
GBP
|
1,700,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
2,700,000
GBP
|
–
GBP
|
| Comprehensive income |
1,200,000
GBP
|
–
GBP
|
176,200,000
GBP
|
— |
–
GBP
|
–
GBP
|
10,300,000
GBP
|
–
GBP
|
177,400,000
GBP
|
186,500,000
GBP
|
151,500,000
GBP
|
–
GBP
|
149,400,000
GBP
|
1,700,000
GBP
|
— |
–
GBP
|
400,000
GBP
|
–
GBP
|
151,100,000
GBP
|
–
GBP
|