Statement Of Financial Position [Abstract]
| Concept |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Right-of-use assets | — |
104. 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
9 7. 3
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Non-current assets | — |
391,600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
37 8.9
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories | — |
11 . 2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
11,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables | — |
105 .2
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
102 .3
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
2 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
4 .0
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Current assets | — |
121,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
12 1.3
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Assets | — |
513,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
5 0 0. 2
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — |
25,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
25,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Retained earnings | — |
135,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1 4 7. 6
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Share premium | — |
1,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity |
1,000,000
GBP
|
162 . 2
GBP
|
700,000
GBP
|
1. 9
GBP
|
25,800,000
GBP
|
135,400,000
GBP
|
0 . 4
GBP
|
2 . 2
GBP
|
1 .0
GBP
|
1 4 7. 6
GBP
|
1,900,000
GBP
|
25,800,000
GBP
|
0. 7
GBP
|
175 .7
GBP
|
0. 2
GBP
|
1. 5
GBP
|
184,600,000
GBP
|
1,900,000
GBP
|
0. 3
GBP
|
25,800,000
GBP
|
0. 7
GBP
|
156. 2
GBP
|
1,000,000
GBP
|
1. 3
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||||||||
| Non-current provisions | — |
8 .0
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
7. 6
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — |
8 . 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
8,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — |
210,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
195,900,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||||||||
| Current provisions | — |
6 .1
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
8,800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Trade and other current payables | — |
10 6.9
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
96,400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Current liabilities | — |
1 4 0. 4
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1 28.6
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Liabilities | — |
3 5 0. 8
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
324. 5
GBP
|
— | — | — | — | — | — | — | — | — | — |