Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
2, 290
GBP
|
2 ,561
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
19,000
GBP
|
20,000
GBP
|
— |
| Goodwill |
23,4 79
GBP
|
23,4 79
GBP
|
— |
| Trade and other non-current receivables [abstract] | |||
| Trade and other non-current receivables |
171,000
GBP
|
—
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current investments other than investments accounted for using equity method |
1,892,000
GBP
|
1, 892
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
8,715,000
GBP
|
5,784,000
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash equivalents [abstract] | |||
| Short-term deposits, classified as cash equivalents |
36,429,000
GBP
|
41,7 40
GBP
|
— |
| Cash and cash equivalents |
36,4 77
GBP
|
88,442,000
GBP
|
40,55 3
GBP
|
| Trade and other current payables [abstract] | |||
| Current accruals and current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities [abstract] | |||
| Current deferred income including current contract liabilities |
11,595,000
GBP
|
2,87 4
GBP
|
— |
| Trade and other current payables |
10,356,000
GBP
|
14, 877
GBP
|
— |
| Miscellaneous liabilities [abstract] | |||
| Warrant liability |
2,000
GBP
|
35 2
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
103,000
GBP
|
100,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
519,408,000
GBP
|
4 56,091
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
365,000
GBP
|
328,000
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Reserve of share-based payments |
160,999,000
GBP
|
203,739,000
GBP
|
— |
| Merger reserve |
524,572,000
GBP
|
524,572,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
123,831,000
GBP
|
185,952,000
GBP
|
— |
| Liabilities |
29,560,000
GBP
|
31,953,000
GBP
|
— |
| Assets (liabilities) |
94 ,27 1
GBP
|
153,999,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
91,388,000
GBP
|
152,085,000
GBP
|
— |
| Current liabilities |
25,037,000
GBP
|
25,639,000
GBP
|
— |
| Assets less current liabilities [abstract] |