Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
1 4 .1
GBP
|
28 .7
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
2 4 .9
GBP
|
24 .4
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in associates reported in separate financial statements |
7. 6
GBP
|
11 . 0
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
4 .1
GBP
|
—
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
25,000,000
GBP
|
6 7. 0
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
224 .0
GBP
|
10 3 . 3
GBP
|
16 4 .5
GBP
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
73,200,000
GBP
|
24 .3
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
—
GBP
|
17 1. 2
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Borrowings, by type [abstract] | |||
| Bonds issued |
14 0 . 3
GBP
|
294,300,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
36 .4
GBP
|
3 4 .1
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
400,000
GBP
|
300,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
3 5. 6
GBP
|
9 8 .6
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
11,100,000
GBP
|
9,700,000
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Reserve of share-based payments |
1 9 .1
GBP
|
13 . 6
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
5 6 5.9
GBP
|
782 .2
GBP
|
— |
| Liabilities |
2 7 7. 9
GBP
|
5 6 4.6
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
4 0 1.9
GBP
|
6 7 1.9
GBP
|
— |
| Current liabilities |
1 8 7. 0
GBP
|
5 15 . 6
GBP
|
— |
| Assets less current liabilities [abstract] |