Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
39,000,000
GBP
|
49,300,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
6 7. 8
GBP
|
72 . 9
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
1 4 .1
GBP
|
22 .6
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current investments other than investments accounted for using equity method |
2,900,000
GBP
|
2 .9
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
14 7. 6
GBP
|
10 9 . 6
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
14 . 8
GBP
|
19 . 4
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
6 03 .1
GBP
|
9 4 9 .1
GBP
|
1, 2 90 . 9
GBP
|
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
3 26 .4
GBP
|
3 32 . 8
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
8 .1
GBP
|
9,300,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
9 0 7. 5
GBP
|
604 .5
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
13 . 2
GBP
|
6 . 4
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Reserve of share-based payments |
18 3 . 2
GBP
|
18 3 . 2
GBP
|
— |
| Merger reserve |
1, 2 8 8 . 5
GBP
|
1 ,288. 5
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
1 ,022.0
GBP
|
1, 3 5 3 . 9
GBP
|
— |
| Liabilities |
5 13 . 2
GBP
|
549,800,000
GBP
|
— |
| Assets (liabilities) |
508,800,000
GBP
|
8 0 4 .1
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
8 41. 2
GBP
|
1 ,12 8 . 6
GBP
|
— |
| Current liabilities |
4 0 0 .5
GBP
|
3 45 .1
GBP
|
— |
| Assets less current liabilities [abstract] |