Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-03-30 |
As at 2023-03-25 |
As at 2022-03-26 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
85,400,000
GBP
|
9 7. 1
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
3 7. 2
GBP
|
39. 3
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
72,800,000
GBP
|
7 0. 7
GBP
|
— |
| Current prepayments and current accrued income including current contract assets [abstract] | |||
| Current accrued income including current contract assets [abstract] | |||
| Current contract assets |
1 6.7
GBP
|
18,900,000
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
41,700,000
GBP
|
49,300,000
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash [abstract] | |||
| Cash |
21,800,000
GBP
|
26 .5
GBP
|
— |
| Cash equivalents [abstract] | |||
| Short-term deposits, classified as cash equivalents |
7. 5
GBP
|
13,800,000
GBP
|
— |
| Cash and cash equivalents |
2 9. 3
GBP
|
40 .3
GBP
|
24,300,000
GBP
|
| Miscellaneous current assets [abstract] | |||
| Current derivative financial assets |
0. 7
GBP
|
2,400,000
GBP
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
117 .2
GBP
|
118,400,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
82 . 8
GBP
|
9 2.1
GBP
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
51,600,000
GBP
|
54,700,000
GBP
|
— |
| Other non-current liabilities |
1. 1
GBP
|
1,200,000
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
3,300,000
GBP
|
1,900,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
8 9.0
GBP
|
88,800,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
70,200,000
GBP
|
55,700,000
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
6. 4
GBP
|
9. 2
GBP
|
— |
| Reserve of cash flow hedges |
1,200,000
GBP
|
100,000
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Capital redemption reserve |
5,900,000
GBP
|
5 .9
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
294,300,000
GBP
|
336 .2
GBP
|
— |
| Liabilities |
291. 7
GBP
|
313. 6
GBP
|
— |
| Assets (liabilities) |
2,600,000
GBP
|
22,600,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
161,400,000
GBP
|
181,800,000
GBP
|
— |
| Current liabilities |
110 .8
GBP
|
126 .2
GBP
|
— |
| Assets less current liabilities [abstract] |