Statement Of Financial Position [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Property, plant and equipment |
1,670,000
GBP
|
— | — | — | — | — | — | — |
600,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets |
512,000
GBP
|
— | — | — | — | — | — | — |
254,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Investment property |
433,942,000
GBP
|
— | — | — | — | — | — | — |
400,363,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other non-current receivables |
11,296,000
GBP
|
— | — | — | — | — | — | — |
4,013,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current assets |
478,142,000
GBP
|
— | — | — | — | — | — | — |
435,058,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Current inventories |
263,073,000
GBP
|
— | — | — | — | — | — | — |
216,393,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
37,289,000
GBP
|
— | — | — | — | — | — | — |
56,658,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current assets |
346,296,000
GBP
|
— | — | — | — | — | — | — |
344,424,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Assets |
824,438,000
GBP
|
— | — | — | — | — | — | — |
779,482,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital |
32,408,000
GBP
|
— | — | — | — | — | — | — |
32,305,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium |
25,034,000
GBP
|
— | — | — | — | — | — | — |
24,688,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Treasury shares |
99,000
GBP
|
— | — | — | — | — | — | — |
50,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
637,722,000
GBP
|
309,278,000
GBP
|
225,177,000
GBP
|
257,000
GBP
|
25,034,000
GBP
|
32,408,000
GBP
|
45,667,000
GBP
|
99,000
GBP
|
602,664,000
GBP
|
174,520,000
GBP
|
24,688,000
GBP
|
257,000
GBP
|
325,277,000
GBP
|
50,000
GBP
|
32,305,000
GBP
|
45,667,000
GBP
|
24,000
GBP
|
275,556,000
GBP
|
257,000
GBP
|
199,629,000
GBP
|
577,984,000
GBP
|
45,667,000
GBP
|
24,627,000
GBP
|
32,272,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Trade and other non-current payables |
1,757,000
GBP
|
— | — | — | — | — | — | — |
2,819,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
30,089,000
GBP
|
— | — | — | — | — | — | — |
24,141,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities |
66,084,000
GBP
|
— | — | — | — | — | — | — |
84,157,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Trade and other current payables |
88,087,000
GBP
|
— | — | — | — | — | — | — |
82,499,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities, current |
2,643,000
GBP
|
— | — | — | — | — | — | — |
7,013,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Current liabilities |
120,632,000
GBP
|
— | — | — | — | — | — | — |
92,661,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities |
186,716,000
GBP
|
— | — | — | — | — | — | — |
176,818,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — |