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] | ||||||||||||||||||||||||
| Property, plant and equipment |
23,523,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
26,773,000
GBP
|
— | — | — | — | — | — | — | — |
| Investment property |
7,895,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
8,049,000
GBP
|
— | — | — | — | — | — | — | — |
| Goodwill |
3,742,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,742,000
GBP
|
— | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
133,415,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
135,785,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-current assets |
236,910,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
230,241,000
GBP
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories |
3,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,749,000
GBP
|
— | — | — | — | — | — | — | — |
| Trade and other current receivables |
118,377,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
104,066,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents |
79,020,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
57,829,000
GBP
|
193,804,000
GBP
|
— | — | — | — | — | — | — |
| Current assets |
499,484,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
421,150,000
GBP
|
— | — | — | — | — | — | — | — |
| Assets |
736,394,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
651,391,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital |
4,042,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
4,007,000
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings |
102,708,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
93,802,000
GBP
|
— | — | — | — | — | — | — | — |
| Share premium |
161,491,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
151,553,000
GBP
|
— | — | — | — | — | — | — | — |
| Treasury shares |
15,688,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
15,688,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity attributable to owners of parent |
251,510,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
232,631,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity |
251,510,000
GBP
|
-
GBP
|
107,000
GBP
|
161,491,000
GBP
|
1,150,000
GBP
|
15,688,000
GBP
|
4,042,000
GBP
|
102,708,000
GBP
|
93,802,000
GBP
|
1,150,000
GBP
|
-
GBP
|
151, 553
GBP
|
4,007,000
GBP
|
15,688,000
GBP
|
107,000
GBP
|
232,631,000
GBP
|
230,708,000
GBP
|
150,652,000
GBP
|
4,003,000
GBP
|
5,502,000
GBP
|
107,000
GBP
|
1,150,000
GBP
|
-
GBP
|
82,598,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Deferred tax liabilities |
1,465,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,106,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-current liabilities |
196,350,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
181,436,000
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Trade and other current payables |
48,731,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
56,016,000
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities |
288,534,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
237,324,000
GBP
|
— | — | — | — | — | — | — | — |