Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-04-02 |
As at 2021-04-03 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
190,900,000
GBP
|
192,100,000
GBP
|
| Intangible assets and goodwill [abstract] | ||
| Intangible assets other than goodwill [abstract] | ||
| Intangible assets other than goodwill |
293,500,000
GBP
|
317,200,000
GBP
|
| Goodwill |
646,000,000
GBP
|
646,000,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
1,148,700,000
GBP
|
934,700,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
96,500,000
GBP
|
83,400,000
GBP
|
| Classes of current inventories [abstract] | ||
| Current inventories |
78,100,000
GBP
|
68,800,000
GBP
|
| Classes of current inventories, alternative [abstract] | ||
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
54,300,000
GBP
|
4,200,000
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current derivative financial assets |
2,400,000
GBP
|
100,000
GBP
|
| Borrowings [abstract] | ||
| Non-current portion of non-current borrowings |
323,200,000
GBP
|
315,200,000
GBP
|
| Current borrowings and current portion of non-current borrowings [abstract] | ||
| Current borrowings |
–
GBP
|
3,100,000
GBP
|
| Non-current portion of non-current borrowings, by type [abstract] | ||
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
254,000,000
GBP
|
249,800,000
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Non-current net defined benefit liability |
203,800,000
GBP
|
394,800,000
GBP
|
| Other non-current liabilities |
5,700,000
GBP
|
7,100,000
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Current derivative financial liabilities |
300,000
GBP
|
2,300,000
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
86,300,000
GBP
|
85,500,000
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
1,076,700,000
GBP
|
755,100,000
GBP
|
| Miscellaneous equity [abstract] | ||
| Merger reserve |
351,700,000
GBP
|
351,700,000
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
2,533,500,000
GBP
|
2,274,900,000
GBP
|
| Liabilities |
1,026,600,000
GBP
|
1,091,300,000
GBP
|
| Assets (liabilities) |
1,506,900,000
GBP
|
1,183,600,000
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
231,300,000
GBP
|
156,500,000
GBP
|
| Current liabilities |
258,700,000
GBP
|
263,700,000
GBP
|
| Assets less current liabilities [abstract] |