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] | ||||||||||||||||||
| Property, plant and equipment | — | — |
2,241,000
GBP
|
— | — | — | — | — | — | — | — |
3,719,000
GBP
|
— | — | — | — | — | — |
| Goodwill | — | — |
32,110,000
GBP
|
— | — | — | — | — | — | — | — |
32,110,000
GBP
|
— | — | — | — | — | — |
| Intangible assets other than goodwill | — | — |
39,367,000
GBP
|
— | — | — | — | — | — | — | — |
48,472,000
GBP
|
— | — | — | — | — | — |
| Cash and cash equivalents | — | — |
75,901,000
GBP
|
— | — | — | — | — | — | — | — |
104,318,000
GBP
|
121,037,000
GBP
|
— | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — |
637,000
GBP
|
— | — | — | — | — | — | — | — |
648,000
GBP
|
— | — | — | — | — | — |
| Retained earnings | — | — |
150,445,000
GBP
|
— | — | — | — | — | — | — | — |
183,461,000
GBP
|
— | — | — | — | — | — |
| Treasury shares | — | — |
12,939,000
GBP
|
— | — | — | — | — | — | — | — |
12,894,000
GBP
|
— | — | — | — | — | — |
| Equity |
637,000
GBP
|
150,445,000
GBP
|
138,162,000
GBP
|
19,000
GBP
|
–
GBP
|
12,939,000
GBP
|
183,461,000
GBP
|
–
GBP
|
648,000
GBP
|
12,894,000
GBP
|
19,000
GBP
|
171,234,000
GBP
|
220,981,000
GBP
|
112,510,000
GBP
|
648,000
GBP
|
13,537,000
GBP
|
19,000
GBP
|
121,341,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||
| Deferred tax liabilities | — | — |
8,946,000
GBP
|
— | — | — | — | — | — | — | — |
11,227,000
GBP
|
— | — | — | — | — | — |