Statement Of Financial Position [Abstract]
| Concept |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
59. 4
GBP
|
— | — |
61,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — | — | — |
17 3 . 5
GBP
|
— | — |
14 4. 1
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
11. 2
GBP
|
— | — |
11 .8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — | — |
51 5. 2
GBP
|
— | — |
483,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories | — | — | — | — | — | — |
2 54.6
GBP
|
— | — |
2 5 7. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — | — | — | — |
68,800,000
GBP
|
— | — |
9 3.0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
111 .1
GBP
|
— | — |
157 .5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
22 8.0
GBP
|
| Current assets | — | — | — | — | — | — |
4 3 7. 2
GBP
|
— | — |
508,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
952 .4
GBP
|
— | — |
992,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
9,600,000
GBP
|
— | — |
10,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — |
1 , 74 7. 6
GBP
|
— | — |
1 ,78 2 . 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares | — | — | — | — | — | — |
–
GBP
|
— | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
1 , 4 0 0 .0
GBP
|
900,000
GBP
|
1 , 7 4 7. 6
GBP
|
9,600,000
GBP
|
–
GBP
|
0. 4
GBP
|
368,200,000
GBP
|
9 .7
GBP
|
0. 5
GBP
|
40 4.2
GBP
|
10,000,000
GBP
|
–
GBP
|
–
GBP
|
1 ,7 82 . 2
GBP
|
1 , 4 0 0 . 0
GBP
|
12 .5
GBP
|
–
GBP
|
–
GBP
|
1 , 4 0 0 . 0
GBP
|
0. 1
GBP
|
10,000,000
GBP
|
7. 0
GBP
|
1 ,711 .3
GBP
|
32 8.2
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions | — | — | — | — | — | — |
6 . 3
GBP
|
— | — |
4 .4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — |
2 . 8
GBP
|
— | — |
1 . 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — | — |
4 3 0 .7
GBP
|
— | — |
4 2 3 .9
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Trade and other current payables | — | — | — | — | — | — |
92 . 2
GBP
|
— | — |
1 2 7. 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — | — |
1 5 3 . 5
GBP
|
— | — |
16 4 .5
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — |
5 8 4. 2
GBP
|
— | — |
5 8 8 .4
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |