Disclosure Of Effect Of Changes In Foreign Exchange Rates [Text Block]
| Concept |
As at 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 |
2022-01-01 to 2022-12-31 |
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 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of effect of changes in foreign exchange rates [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Reserve of exchange differences on translation |
3,700,000
GBP
|
— | — | — | — | — | — | — | — | — |
300,000
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 |
666,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
694,900,000
GBP
|
— | — | — | — | — | — | — |
| Current assets |
575,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
645,800,000
GBP
|
— | — | — | — | — | — | — |
| Non-current liabilities |
143,700,000
GBP
|
— | — | — | — | — | — | — | — | — |
161,900,000
GBP
|
— | — | — | — | — | — | — |
| Current liabilities |
254,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
278,000,000
GBP
|
— | — | — | — | — | — | — |
| Revenue | — | — | — | — | — |
443,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
617,800,000
GBP
|
— |
| Profit (loss) | — |
–
GBP
|
–
GBP
|
47,300,000
GBP
|
–
GBP
|
47,900,000
GBP
|
47,300,000
GBP
|
600,000
GBP
|
–
GBP
|
200,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
149,400,000
GBP
|
149,600,000
GBP
|
149,400,000
GBP
|
| Other comprehensive income | — |
–
GBP
|
–
GBP
|
3,400,000
GBP
|
–
GBP
|
3,400,000
GBP
|
–
GBP
|
–
GBP
|
3,400,000
GBP
|
–
GBP
|
— |
2,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2,500,000
GBP
|
2,500,000
GBP
|
–
GBP
|
| Comprehensive income | — |
–
GBP
|
–
GBP
|
50,700,000
GBP
|
–
GBP
|
51,300,000
GBP
|
47,300,000
GBP
|
600,000
GBP
|
3,400,000
GBP
|
200,000
GBP
|
— |
2,500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
146,900,000
GBP
|
147,100,000
GBP
|
149,400,000
GBP
|