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 |
504,900,000
GBP
|
516 . 3
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Other intangible assets |
111 . 2
GBP
|
11 6 . 9
GBP
|
— |
| Goodwill |
22 1 .5
GBP
|
227 .8
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
1. 3
GBP
|
1. 5
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
14 8 . 4
GBP
|
15 4 . 4
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
29,500,000
GBP
|
27,800,000
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash [abstract] | |||
| Cash |
45,200,000
GBP
|
37,200,000
GBP
|
— |
| Cash and cash equivalents |
44. 7
GBP
|
36,200,000
GBP
|
37 .9
GBP
|
| Borrowings [abstract] | |||
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
32,600,000
GBP
|
70. 6
GBP
|
— |
| Trade and other non-current payables [abstract] | |||
| Other non-current payables |
900,000
GBP
|
1,100,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
122 .7
GBP
|
124 . 9
GBP
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
11 .1
GBP
|
10 . 9
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
–
GBP
|
300,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
33. 1
GBP
|
33. 1
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
404. 0
GBP
|
359,800,000
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
52,300,000
GBP
|
81,200,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
1, 13 6 .7
GBP
|
1,16 7.7
GBP
|
— |
| Liabilities |
344,400,000
GBP
|
385. 7
GBP
|
— |
| Assets (liabilities) |
792,300,000
GBP
|
782,000,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
236. 7
GBP
|
244,100,000
GBP
|
— |
| Current liabilities |
225. 1
GBP
|
261 . 1
GBP
|
— |
| Current assets (liabilities) |
11 . 6
GBP
|
1 7 . 0
GBP
|
— |
| Assets less current liabilities [abstract] |