Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-12-25 |
As at 2021-12-26 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
96,500,000
GBP
|
9 0.3
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets and goodwill |
3 0.0
GBP
|
32. 1
GBP
|
| Investments accounted for using equity method [abstract] | ||
| Investments accounted for using equity method |
25 .4
GBP
|
52,700,000
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Trade and other non-current receivables |
3,400,000
GBP
|
14,000,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current finance lease receivables |
1 85.6
GBP
|
187 .5
GBP
|
| Non-current investments other than investments accounted for using equity method |
11,300,000
GBP
|
1 2 .1
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
55,900,000
GBP
|
34,300,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
11 .6
GBP
|
1 0. 9
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
3 0.4
GBP
|
42,800,000
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 |
3 2.9
GBP
|
—
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current finance lease receivables |
14,400,000
GBP
|
1 3.7
GBP
|
| Trade and other non-current payables [abstract] | ||
| Trade and other non-current payables |
0. 2
GBP
|
0 .2
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
9 8.6
GBP
|
96. 1
GBP
|
| Categories of non-current financial liabilities [abstract] | ||
| Non-current financial liabilities |
2 8 3 .7
GBP
|
242,500,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
2,200,000
GBP
|
2,300,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
15 6.6
GBP
|
105. 4
GBP
|
| Accumulated other comprehensive income [abstract] | ||
| Reserve of exchange differences on translation |
0. 5
GBP
|
1,000,000
GBP
|
| Miscellaneous equity [abstract] | ||
| Capital redemption reserve |
0. 5
GBP
|
0. 5
GBP
|
| Capital reserve |
9,000,000
GBP
|
4,600,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
520 .7
GBP
|
522,000,000
GBP
|
| Liabilities |
633 .5
GBP
|
580 . 6
GBP
|
| Assets (liabilities) |
112,800,000
GBP
|
58,600,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
147 .2
GBP
|
1 0 7. 1
GBP
|
| Current liabilities |
128,500,000
GBP
|
117 .8
GBP
|
| Assets less current liabilities [abstract] |