Statement Of Financial Position [Abstract]
| Concept |
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 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 |
As at 2021-05-01 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2020-05-01 |
As at 2020-05-01 |
As at 2020-05-01 |
As at 2020-05-01 |
As at 2020-05-01 |
As at 2020-05-01 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — |
40,500,000
GBP
|
— | — | — | — | — | — | — | — |
46,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — |
5,800,000
GBP
|
— | — | — | — | — | — | — | — |
3,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Inventories | — | — | — | — |
5, 134.0
GBP
|
— | — | — | — | — | — | — | — |
3,652,500,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Current tax assets | — | — | — | — |
4,500,000
GBP
|
— | — | — | — | — | — | — | — |
7. 9
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — |
120,700,000
GBP
|
— | — | — | — | — | — | — | — |
4 0 .1
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Trade and other receivables | — | — | — | — |
145,700,000
GBP
|
— | — | — | — | — | — | — | — |
7 5.4
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — |
928,900,000
GBP
|
— | — | — | — | — |
1,428,000
GBP
|
— | — |
1,428,200,000
GBP
|
— | — | — | — | — |
1,638,900,000
GBP
|
— | — | — | — |
| Assets | — | — | — | — |
6,587 .7
GBP
|
— | — | — | — | — | — | — | — |
5,552,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — | — | — | — |
6,500,000
GBP
|
— | — | — | — | — | — | — | — |
6,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
4,016. 1
GBP
|
— | — | — | — | — | — | — | — |
4, 055.4
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — |
49,800,000
GBP
|
— | — | — | — | — | — | — | — |
49,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — |
961,300,000
GBP
|
— | — | — | — | — | — | — | — |
961,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity |
4,016. 1
GBP
|
49,800,000
GBP
|
6,500,000
GBP
|
25,000,000
GBP
|
3, 136. 1
GBP
|
961,300,000
GBP
|
49,800,000
GBP
|
24,900,000
GBP
|
6,600,000
GBP
|
961,300,000
GBP
|
3, 175.4
GBP
|
4,055,400,000
GBP
|
961,300,000
GBP
|
3, 175.4
GBP
|
49,800,000
GBP
|
4,055,400,000
GBP
|
6,600,000
GBP
|
2 4.9
GBP
|
3,981,600,000
GBP
|
3, 101.6
GBP
|
961,300,000
GBP
|
6,800,000
GBP
|
24. 7
GBP
|
49,800,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Liabilities | — | — | — | — |
3,451,600,000
GBP
|
— | — | — | — | — | — | — | — |
2,37 6.8
GBP
|
— | — | — | — | — | — | — | — | — | — |