Statement Of Cash Flows [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||||
| Profit (loss) |
—
GBP
|
63, 317
GBP
|
—
GBP
|
— |
—
GBP
|
63, 317
GBP
|
—
GBP
|
—
GBP
|
— |
—
GBP
|
—
GBP
|
163,928,000
GBP
|
—
GBP
|
163,928,000
GBP
|
—
GBP
|
—
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||||
| Adjustments for finance costs | — |
407,000
GBP
|
— | — | — | — | — | — | — | — | — |
2,104,000
GBP
|
— | — | — | — | — |
| Adjustments for depreciation and amortisation expense | — |
2, 880
GBP
|
— | — | — | — | — | — | — | — | — |
3,056,000
GBP
|
— | — | — | — | — |
| Adjustments for provisions | — |
3,638,000
GBP
|
— | — | — | — | — | — | — | — | — |
6 ,160
GBP
|
— | — | — | — | — |
| Adjustments for unrealised foreign exchange losses (gains) | — |
669,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,141,000
GBP
|
— | — | — | — | — |
| Adjustments for share-based payments | — |
5,69 3
GBP
|
— | — | — | — | — | — | — | — | — |
3 3,818
GBP
|
— | — | — | — | — |
| Other adjustments for non-cash items | — |
—
GBP
|
— | — | — | — | — | — | — | — | — |
83,067,000
GBP
|
— | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — |
16,132,000
GBP
|
— | — | — | — | — | — | — | — | — |
12,150,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) operating activities | — |
57 ,124
GBP
|
— | — | — | — | — | — | — | — | — |
76,911,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||||
| Purchase of property, plant and equipment, classified as investing activities | — |
1,105,000
GBP
|
— | — | — | — | — | — | — | — | — |
1,158,000
GBP
|
— | — | — | — | — |
| Interest received, classified as investing activities | — |
3,6 76
GBP
|
— | — | — | — | — | — | — | — | — |
1,544,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) investing activities | — |
7 ,882
GBP
|
— | — | — | — | — | — | — | — | — |
41,354,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||||
| Proceeds from issuing other equity instruments | — |
—
GBP
|
— | — | — | — | — | — | — | — | — |
136,680,000
GBP
|
— | — | — | — | — |
| Interest paid, classified as financing activities | — |
81,000
GBP
|
— | — | — | — | — | — | — | — | — |
122,000
GBP
|
— | — | — | — | — |
| Cash flows from (used in) financing activities | — |
2 ,091
GBP
|
— | — | — | — | — | — | — | — | — |
162,978,000
GBP
|
— | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
51,333,000
GBP
|
— | — | — | — | — | — | — | — | — |
44 ,713
GBP
|
— | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
632,000
GBP
|
— | — | — | — | — | — | — | — | — |
3,176,000
GBP
|
— | — | — | — | — |
| Cash and cash equivalents | — | — | — |
36,4 77
GBP
|
— | — | — | — |
88,442,000
GBP
|
— | — | — | — | — | — | — |
40,55 3
GBP
|