Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-12-28 |
As at 2023-12-30 |
As at 2022-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
900,000
GBP
|
1,100,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
12,000,000
GBP
|
11,600,000
GBP
|
— |
| Goodwill |
13,700,000
GBP
|
13,300,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current investments other than investments accounted for using equity method |
100,000
GBP
|
1,100,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
19,000,000
GBP
|
15,300,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
100,000
GBP
|
-
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
10,900,000
GBP
|
10,700,000
GBP
|
27,000,000
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 |
-
GBP
|
1,000,000
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
21,400,000
GBP
|
19,900,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
300,000
GBP
|
300,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
9,900,000
GBP
|
7,800,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
60,300,000
GBP
|
57,400,000
GBP
|
— |
| Liabilities |
22,700,000
GBP
|
21,900,000
GBP
|
— |
| Assets (liabilities) |
37,600,000
GBP
|
35,500,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
30,800,000
GBP
|
26,000,000
GBP
|
— |
| Current liabilities |
22,300,000
GBP
|
21,600,000
GBP
|
— |
| Assets less current liabilities [abstract] |