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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — | — | — |
23,000,000
GBP
|
— | — | — | — | — |
20,500,000
GBP
|
— | — | — | — | — | — | — |
| Right-of-use assets | — | — | — | — |
27,400,000
GBP
|
— | — | — | — | — |
20,600,000
GBP
|
— | — | — | — | — | — | — |
| Goodwill | — | — | — | — |
244,200,000
GBP
|
— | — | — | — | — |
231,700,000
GBP
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — |
92,200,000
GBP
|
— | — | — | — | — |
97,800,000
GBP
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — |
10,100,000
GBP
|
— | — | — | — | — |
9,900,000
GBP
|
— | — | — | — | — | — | — |
| Non-current assets | — | — | — | — |
396,900,000
GBP
|
— | — | — | — | — |
381,000,000
GBP
|
— | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Current inventories | — | — | — | — |
82,900,000
GBP
|
— | — | — | — | — |
80,100,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other current receivables | — | — | — | — |
74,400,000
GBP
|
— | — | — | — | — |
88,800,000
GBP
|
— | — | — | — | — | — | — |
| Current tax assets, current | — | — | — | — |
1,500,000
GBP
|
— | — | — | — | — |
1,300,000
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — |
139,300,000
GBP
|
— | — | — | — | — |
110,800,000
GBP
|
— | — | — | — | — | — | — |
| Current assets | — | — | — | — |
298,100,000
GBP
|
— | — | — | — | — |
287,700,000
GBP
|
— | — | — | — | — | — | — |
| Assets | — | — | — | — |
695,000,000
GBP
|
— | — | — | — | — |
668,700,000
GBP
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — | — | — |
4,800,000
GBP
|
— | — | — | — | — |
4,800,000
GBP
|
— | — | — | — | — | — | — |
| Retained earnings | — | — | — | — |
114,100,000
GBP
|
— | — | — | — | — |
104,000,000
GBP
|
— | — | — | — | — | — | — |
| Share premium | — | — | — | — |
192,000,000
GBP
|
— | — | — | — | — |
192,000,000
GBP
|
— | — | — | — | — | — | — |
| Equity |
4,800,000
GBP
|
5,800,000
GBP
|
114,100,000
GBP
|
2,900,000
GBP
|
308,000,000
GBP
|
192,000,000
GBP
|
2,900,000
GBP
|
104,000,000
GBP
|
192,000,000
GBP
|
4,800,000
GBP
|
301,600,000
GBP
|
2,100,000
GBP
|
2,900,000
GBP
|
303,600,000
GBP
|
5,600,000
GBP
|
192,000,000
GBP
|
4,800,000
GBP
|
98,300,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||
| Non-current provisions | — | — | — | — |
4,000,000
GBP
|
— | — | — | — | — |
3,600,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other non-current payables | — | — | — | — |
6,200,000
GBP
|
— | — | — | — | — |
4,600,000
GBP
|
— | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — |
21,000,000
GBP
|
— | — | — | — | — |
23,000,000
GBP
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — |
191,500,000
GBP
|
— | — | — | — | — |
181,700,000
GBP
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||
| Current provisions | — | — | — | — |
5,000,000
GBP
|
— | — | — | — | — |
5,200,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other current payables | — | — | — | — |
81,100,000
GBP
|
— | — | — | — | — |
87,500,000
GBP
|
— | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — | — |
8,200,000
GBP
|
— | — | — | — | — |
8,300,000
GBP
|
— | — | — | — | — | — | — |
| Current liabilities | — | — | — | — |
195,500,000
GBP
|
— | — | — | — | — |
185,400,000
GBP
|
— | — | — | — | — | — | — |
| Liabilities | — | — | — | — |
387,000,000
GBP
|
— | — | — | — | — |
367,100,000
GBP
|
— | — | — | — | — | — | — |