Statement Of Financial Position [Abstract]
| Concept |
As at 2023-04-30 |
As at 2023-04-30 |
As at 2023-04-30 |
As at 2023-04-30 |
As at 2023-04-30 |
As at 2023-04-30 |
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 2022-04-30 |
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 2021-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — | — | — |
34,600,000
GBP
|
— | — | — | — |
40,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — |
5,200,000
GBP
|
— | — | — | — |
5,800,000
GBP
|
— | — | — | — | — | — | — | — |
| Current tax assets | — | — | — | — |
–
GBP
|
— | — | — | — |
4,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — |
114,500,000
GBP
|
— | — | — | — |
1 20.7
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — |
1,070. 4
GBP
|
— | — | — | — |
928,900,000
GBP
|
— | — | — | — | — | — | — |
1,428,200,000
GBP
|
| Assets | — | — | — | — |
6,859. 7
GBP
|
— | — | — | — |
6,587 . 7
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — | — | — |
6,300,000
GBP
|
— | — | — | — |
6,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
4,212,300,000
GBP
|
— | — | — | — |
4,016. 1
GBP
|
— | — | — | — | — | — | — | — |
| Share premium | — | — | — | — |
49,800,000
GBP
|
— | — | — | — |
49,800,000
GBP
|
— | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — |
961,300,000
GBP
|
— | — | — | — |
961,300,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity |
961,300,000
GBP
|
4,212,300,000
GBP
|
49,800,000
GBP
|
6,300,000
GBP
|
3,332,300,000
GBP
|
25,200,000
GBP
|
25. 0
GBP
|
6,500,000
GBP
|
4, 016. 1
GBP
|
3, 136. 1
GBP
|
961,300,000
GBP
|
49,800,000
GBP
|
49,800,000
GBP
|
4,055,400,000
GBP
|
961,300,000
GBP
|
6,600,000
GBP
|
24,900,000
GBP
|
3,17 5.4
GBP
|
| Liabilities [abstract] | ||||||||||||||||||
| Current tax liabilities | — | — | — | — |
3,700,000
GBP
|
— | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — |
3,527 .4
GBP
|
— | — | — | — |
3,451,600,000
GBP
|
— | — | — | — | — | — | — | — |