Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-04-01 |
As at 2022-04-02 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
185,900,000
GBP
|
190,900,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets other than goodwill [abstract] | ||
| Intangible assets other than goodwill |
294,400,000
GBP
|
293,500,000
GBP
|
| Goodwill |
680,300,000
GBP
|
646,000,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
960,100,000
GBP
|
1,148,700,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
103,900,000
GBP
|
96,500,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
93,700,000
GBP
|
78,100,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
64,400,000
GBP
|
54,300,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
800,000
GBP
|
2,400,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
324,400,000
GBP
|
323,200,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings |
1,000,000
GBP
|
–
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
255,400,000
GBP
|
254,000,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
194,600,000
GBP
|
203,800,000
GBP
|
| Other non-current liabilities |
12,900,000
GBP
|
5,700,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
500,000
GBP
|
300,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
86,800,000
GBP
|
86,300,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
974,300,000
GBP
|
1,076,700,000
GBP
|
| Miscellaneous equity [abstract] | ||
| Merger reserve |
351,700,000
GBP
|
351,700,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
2,405,900,000
GBP
|
2,533,500,000
GBP
|
| Liabilities |
999,900,000
GBP
|
1,026,600,000
GBP
|
| Assets (liabilities) |
1,406,000,000
GBP
|
1,506,900,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
262,800,000
GBP
|
231,300,000
GBP
|
| Current liabilities |
272,300,000
GBP
|
258,700,000
GBP
|
| Assets less current liabilities [abstract] |