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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Property, plant and equipment | — | — | — |
11,800,000
GBP
|
— | — |
13,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
3,200,000
GBP
|
— | — |
3,600,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — |
29,300,000
GBP
|
— | — |
22,500,000
GBP
|
— | — | — |
20,300,000
GBP
|
— | — | — | — |
| Assets | — | — | — |
219,400,000
GBP
|
— | — |
181,300,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
5,300,000
GBP
|
— | — |
4,400,000
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings | — | — | — |
34,500,000
GBP
|
— | — |
29,500,000
GBP
|
— | — | — | — | — | — | — | — |
| Share premium | — | — | — |
13,600,000
GBP
|
— | — |
4,400,000
GBP
|
— | — | — | — | — | — | — | — |
| Equity |
13,600,000
GBP
|
5,300,000
GBP
|
34,500,000
GBP
|
53,400,000
GBP
|
–
GBP
|
400,000
GBP
|
38,700,000
GBP
|
4,400,000
GBP
|
29,500,000
GBP
|
4,400,000
GBP
|
26,500,000
GBP
|
17,200,000
GBP
|
700,000
GBP
|
4,200,000
GBP
|
4,400,000
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Liabilities | — | — | — |
166,000,000
GBP
|
— | — |
142,600,000
GBP
|
— | — | — | — | — | — | — | — |