Statement Of Financial Position [Abstract]
| Concept |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2022-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2021-06-30 |
As at 2020-06-30 |
As at 2020-06-30 |
As at 2020-06-30 |
As at 2020-06-30 |
As at 2020-06-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — |
8,112,000
GBP
|
— | — | — | — |
6,684,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other non-current receivables | — | — |
5,051,000
GBP
|
— | — | — | — |
4,672,000
GBP
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — |
941,000
GBP
|
— | — | — | — |
1,233,000
GBP
|
— | — | — | — | — | — | — |
| Non-current assets | — | — |
14,104,000
GBP
|
— | — | — | — |
12,589,000
GBP
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories | — | — |
286,882,000
GBP
|
— | — | — | — |
239,961,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other current receivables | — | — |
29,243,000
GBP
|
— | — | — | — |
22,378,000
GBP
|
— | — | — | — | — | — | — |
| Current tax assets, current | — | — |
3,565,000
GBP
|
— | — | — | — |
3,875,000
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
33,764,000
GBP
|
— | — | — | — |
34,331,000
GBP
|
— | — |
76,807,000
GBP
|
— | — | — | — |
| Current assets | — | — |
353,454,000
GBP
|
— | — | — | — |
300,545,000
GBP
|
— | — | — | — | — | — | — |
| Assets | — | — |
367,558,000
GBP
|
— | — | — | — |
313,134,000
GBP
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — |
1,166,000
GBP
|
— | — | — | — |
1,165,000
GBP
|
— | — | — | — | — | — | — |
| Retained earnings | — | — |
255,638,000
GBP
|
— | — | — | — |
227,923,000
GBP
|
— | — | — | — | — | — | — |
| Share premium | — | — |
15,843,000
GBP
|
— | — | — | — |
15,843,000
GBP
|
— | — | — | — | — | — | — |
| Equity |
255,638,000
GBP
|
15,843,000
GBP
|
272,176,000
GBP
|
471,000
GBP
|
1,166,000
GBP
|
15,843,000
GBP
|
1,165,000
GBP
|
244,931,000
GBP
|
227,923,000
GBP
|
–
GBP
|
212,605,000
GBP
|
15,843,000
GBP
|
195,601,000
GBP
|
–
GBP
|
1,161,000
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions | — | — |
12,049,000
GBP
|
— | — | — | — |
236,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other non-current payables | — | — |
9,703,000
GBP
|
— | — | — | — |
6,917,000
GBP
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — |
21,752,000
GBP
|
— | — | — | — |
7,153,000
GBP
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Current provisions | — | — |
1,339,000
GBP
|
— | — | — | — |
23,000
GBP
|
— | — | — | — | — | — | — |
| Trade and other current payables | — | — |
72,291,000
GBP
|
— | — | — | — |
61,027,000
GBP
|
— | — | — | — | — | — | — |
| Current liabilities | — | — |
73,630,000
GBP
|
— | — | — | — |
61,050,000
GBP
|
— | — | — | — | — | — | — |
| Liabilities | — | — |
95,382,000
GBP
|
— | — | — | — |
68,203,000
GBP
|
— | — | — | — | — | — | — |