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 |
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 |
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 |
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 |
As at 2020-01-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of effect of changes in foreign exchange rates [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reserve of exchange differences on translation | — | — | — | — |
47,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
24,100,000
GBP
|
— | — | — |
11,000,000
GBP
|
| 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 | — | — | — | — |
839,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
855,500,000
GBP
|
— | — | — |
836,500,000
GBP
|
| Current assets | — | — | — | — |
442,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
396,600,000
GBP
|
— | — | — |
364,400,000
GBP
|
| Non-current liabilities | — | — | — | — |
437,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
427,700,000
GBP
|
— | — | — |
377,300,000
GBP
|
| Current liabilities | — | — | — | — |
215,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
206,400,000
GBP
|
— | — | — |
288,100,000
GBP
|
| Revenue | — | — | — | — | — | — | — | — |
959,700,000
GBP
|
— |
896,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Profit (loss) |
1 .4
GBP
|
— | — | — | — | — | — | — |
28,300,000
GBP
|
26,900,000
GBP
|
1,500,000
GBP
|
— | — |
3,300,000
GBP
|
— | — | — | — |
1,800,000
GBP
|
— | — |
| Other comprehensive income |
100,000
GBP
|
— |
1,400,000
GBP
|
— | — | — |
23,400,000
GBP
|
— |
4,300,000
GBP
|
20,600,000
GBP
|
18,600,000
GBP
|
400,000
GBP
|
— |
4,600,000
GBP
|
— | — | — |
13,100,000
GBP
|
500,000
GBP
|
— | — |
| Comprehensive income |
1,300,000
GBP
|
-
GBP
|
1,400,000
GBP
|
-
GBP
|
— |
-
GBP
|
23,400,000
GBP
|
-
GBP
|
24,000,000
GBP
|
47,500,000
GBP
|
20,100,000
GBP
|
400,000
GBP
|
-
GBP
|
7,900,000
GBP
|
-
GBP
|
-
GBP
|
— |
13,100,000
GBP
|
1,300,000
GBP
|
-
GBP
|
— |