Statement Of Financial Position [Abstract]
| Concept |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2024-09-30 |
As at 2023-09-30 |
As at 2023-09-30 |
As at 2023-09-30 |
As at 2023-09-30 |
As at 2023-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
As at 2022-09-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment |
3,777,000
GBP
|
— | — | — | — | — |
3,809,000
GBP
|
— | — | — | — | — | — | — | — |
| Right-of-use assets |
11,762,000
GBP
|
— | — | — | — | — |
10,800,000
GBP
|
— | — | — | — | — | — | — | — |
| Goodwill |
6,991,000
GBP
|
— | — | — | — | — |
6,991,000
GBP
|
— | — | — | — | — | — | — | — |
| Intangible assets other than goodwill |
7,540,000
GBP
|
— | — | — | — | — |
7,433,000
GBP
|
— | — | — | — | — | — | — | — |
| Deferred tax assets |
1,546,000
GBP
|
— | — | — | — | — |
484,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-current assets |
31,616,000
GBP
|
— | — | — | — | — |
29,517,000
GBP
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Trade and other current receivables |
59,545,000
GBP
|
— | — | — | — | — |
58,501,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents |
196,651,000
GBP
|
— | — | — | — | — |
146,304,000
GBP
|
— | — | — | — |
84,030,000
GBP
|
— | — | — |
| Current assets |
257,265,000
GBP
|
— | — | — | — | — |
204,805,000
GBP
|
— | — | — | — | — | — | — | — |
| Assets |
288,881,000
GBP
|
— | — | — | — | — |
234,322,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
52,000
GBP
|
— | — | — | — | — |
52,000
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings |
197,024,000
GBP
|
— | — | — | — | — |
159,399,000
GBP
|
— | — | — | — | — | — | — | — |
| Share premium |
8,963,000
GBP
|
— | — | — | — | — |
8,963,000
GBP
|
— | — | — | — | — | — | — | — |
| Treasury shares |
2,049,000
GBP
|
— | — | — | — | — |
2,377,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity |
203,990,000
GBP
|
2,049,000
GBP
|
52,000
GBP
|
8,963,000
GBP
|
197,024,000
GBP
|
2,377,000
GBP
|
166,037,000
GBP
|
159,399,000
GBP
|
8,963,000
GBP
|
52,000
GBP
|
473,000
GBP
|
133,394,000
GBP
|
51,000
GBP
|
124,886,000
GBP
|
8,930,000
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions |
2,372,000
GBP
|
— | — | — | — | — |
2,165,000
GBP
|
— | — | — | — | — | — | — | — |
| Non-current liabilities |
14,096,000
GBP
|
— | — | — | — | — |
13,031,000
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Current provisions |
7,421,000
GBP
|
— | — | — | — | — |
1,126,000
GBP
|
— | — | — | — | — | — | — | — |
| Trade and other current payables |
61,921,000
GBP
|
— | — | — | — | — |
52,437,000
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities |
70,795,000
GBP
|
— | — | — | — | — |
55,254,000
GBP
|
— | — | — | — | — | — | — | — |
| Liabilities |
84,891,000
GBP
|
— | — | — | — | — |
68,285,000
GBP
|
— | — | — | — | — | — | — | — |