Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-31 |
As at 2023-12-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
48,600,000
GBP
|
56,400,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
9 9. 7
GBP
|
152,600,000
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
4,500,000
GBP
|
5,200,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
4. 1
GBP
|
4,200,000
GBP
|
| Non-current derivative financial assets |
–
GBP
|
2 .3
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
38,700,000
GBP
|
47 .3
GBP
|
| Current prepayments and current accrued income including current contract assets [abstract] | ||
| Current accrued income including current contract assets [abstract] | ||
| Current contract assets |
500,000
GBP
|
1,800,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
82,500,000
GBP
|
94,500,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
57 .3
GBP
|
8. 7
GBP
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | ||
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
–
GBP
|
12 .3
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
800,000
GBP
|
1,800,000
GBP
|
| Classes of other provisions [abstract] | ||
| Other provisions [abstract] | ||
| Other non-current provisions |
700,000
GBP
|
800,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
114,200,000
GBP
|
9 9. 0
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings and current portion of non-current borrowings |
200,000
GBP
|
200,000
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | ||
| Trade and other non-current payables [abstract] | ||
| Trade and other non-current payables |
800,000
GBP
|
1,200,000
GBP
|
| Trade and other current payables [abstract] | ||
| Current accruals and current deferred income including current contract liabilities [abstract] | ||
| Current deferred income including current contract liabilities [abstract] | ||
| Current contract liabilities [abstract] | ||
| Current contract liabilities |
4,200,000
GBP
|
2 .1
GBP
|
| Trade and other current payables |
43,700,000
GBP
|
42,800,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
2,500,000
GBP
|
2 .9
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
300,000
GBP
|
0 .1
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
18. 9
GBP
|
18. 9
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
52,200,000
GBP
|
93,400,000
GBP
|
| Accumulated other comprehensive income [abstract] | ||
| Reserve of cash flow hedges |
400,000
GBP
|
2 .9
GBP
|
| Miscellaneous equity [abstract] | ||
| Capital redemption reserve |
1,600,000
GBP
|
1,600,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
346,300,000
GBP
|
451,300,000
GBP
|
| Liabilities |
260,400,000
GBP
|
213,800,000
GBP
|
| Assets (liabilities) |
85. 9
GBP
|
237 .5
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
188,700,000
GBP
|
159 .8
GBP
|
| Current liabilities |
118,800,000
GBP
|
65,700,000
GBP
|
| Assets less current liabilities [abstract] |