Statement Of Financial Position [Abstract]
| Concept |
As at 2023-04-29 |
As at 2023-04-29 |
As at 2023-04-29 |
As at 2023-04-29 |
As at 2023-04-29 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2021-05-01 |
As at 2021-05-01 |
As at 2021-05-01 |
As at 2021-05-01 |
As at 2021-05-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment |
155,000,000
GBP
|
— | — | — | — | — | — |
162,000,000
GBP
|
— | — | — | — | — | — | — |
| Right-of-use assets |
9 95
GBP
|
— | — | — | — | — | — |
1 , 0 07
GBP
|
— | — | — | — | — | — | — |
| Goodwill |
2 , 2 70
GBP
|
— | — | — | — | — | — |
2 , 814
GBP
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill |
350,000,000
GBP
|
— | — | — | — | — | — |
385,000,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other non-current receivables |
14 8
GBP
|
— | — | — | — | — | — |
1 23
GBP
|
— | — | — | — | — | — | — |
| Deferred tax assets |
23,000,000
GBP
|
— | — | — | — | — | — |
28 2
GBP
|
— | — | — | — | — | — | — |
| Non-current assets |
3 ,94 5
GBP
|
— | — | — | — | — | — |
4 , 7 76
GBP
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories |
1 ,1 51
GBP
|
— | — | — | — | — | — |
1, 286
GBP
|
— | — | — | — | — | — | — |
| Trade and other current receivables |
6 31
GBP
|
— | — | — | — | — | — |
696,000,000
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents |
97,000,000
GBP
|
— | — | — | — | — | — |
1 26
GBP
|
— | — | — | — | — | — | — |
| Current assets |
1 ,90 4
GBP
|
— | — | — | — | — | — |
2 ,137
GBP
|
— | — | — | — | — | — | — |
| Assets |
5,849,000,000
GBP
|
— | — | — | — | — | — |
6 ,9 1 3
GBP
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
1,000,000
GBP
|
— | — | — | — | — | — |
1,000,000
GBP
|
— | — | — | — | — | — | — |
| Retained earnings |
432,000,000
GBP
|
— | — | — | — | — | — |
1,040,000,000
GBP
|
— | — | — | — | — | — | — |
| Share premium |
2 , 263
GBP
|
— | — | — | — | — | — |
2 , 26 3
GBP
|
— | — | — | — | — | — | — |
| Other reserves |
8 04
GBP
|
— | — | — | — | — | — |
8 0 3
GBP
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent |
1 ,892
GBP
|
— | — | — | — | — | — |
2, 501
GBP
|
— | — | — | — | — | — | — |
| Equity |
1 , 892
GBP
|
2 , 26 3
GBP
|
1,000,000
GBP
|
432,000,000
GBP
|
8 0 4
GBP
|
1,000,000
GBP
|
1 ,040
GBP
|
2, 501
GBP
|
8 0 3
GBP
|
2 , 26 3
GBP
|
2 , 26 3
GBP
|
1,000,000
GBP
|
76 4
GBP
|
2, 3 81
GBP
|
881,000,000
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions |
5,000,000
GBP
|
— | — | — | — | — | — |
1 1
GBP
|
— | — | — | — | — | — | — |
| Trade and other non-current payables |
1 03
GBP
|
— | — | — | — | — | — |
9 6
GBP
|
— | — | — | — | — | — | — |
| Deferred tax liabilities |
1 5
GBP
|
— | — | — | — | — | — |
2 0 8
GBP
|
— | — | — | — | — | — | — |
| Non-current liabilities |
1 , 570
GBP
|
— | — | — | — | — | — |
1 , 70 9
GBP
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Current provisions |
4 3
GBP
|
— | — | — | — | — | — |
4 8
GBP
|
— | — | — | — | — | — | — |
| Trade and other current payables |
2 ,0 67
GBP
|
— | — | — | — | — | — |
2 , 3 6 8
GBP
|
— | — | — | — | — | — | — |
| Current liabilities |
2,387,000,000
GBP
|
— | — | — | — | — | — |
2 , 70 3
GBP
|
— | — | — | — | — | — | — |
| Liabilities |
3 ,957
GBP
|
— | — | — | — | — | — |
4 , 4 1 2
GBP
|
— | — | — | — | — | — | — |