Statement Of Cash Flows [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
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 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||
| Profit (loss) |
–
GBP
|
26,200,000
GBP
|
–
GBP
|
— |
–
GBP
|
26,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
40,287,000
GBP
|
— |
40,287,000
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||
| Adjustments for income tax expense | — |
1,962,000
GBP
|
— | — | — | — | — | — | — |
2,771,000
GBP
|
— | — | — |
| Adjustments for unrealised foreign exchange losses (gains) | — |
430,000
GBP
|
— | — | — | — | — | — | — |
1,319,000
GBP
|
— | — | — |
| Adjustments for share-based payments | — |
2,913,000
GBP
|
— | — | — | — | — | — | — |
2,038,000
GBP
|
— | — | — |
| Cash flows from (used in) operations | — |
16,762,000
GBP
|
— | — | — | — | — | — | — |
11,956,000
GBP
|
— | — | — |
| Interest received, classified as operating activities | — |
554,000
GBP
|
— | — | — | — | — | — | — |
537,000
GBP
|
— | — | — |
| Income taxes paid (refund), classified as operating activities | — |
940,000
GBP
|
— | — | — | — | — | — | — |
4,285,000
GBP
|
— | — | — |
| Cash flows from (used in) operating activities | — |
17,234,000
GBP
|
— | — | — | — | — | — | — |
19,352,000
GBP
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||
| Other inflows (outflows) of cash, classified as investing activities | — |
45,000
GBP
|
— | — | — | — | — | — | — |
14,000
GBP
|
— | — | — |
| Cash flows from (used in) investing activities | — |
96,693,000
GBP
|
— | — | — | — | — | — | — |
107,822,000
GBP
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||
| Payments to acquire or redeem entity's shares | — |
1,564,000
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
— | — | — |
| Proceeds from borrowings, classified as financing activities | — |
5,000,000
GBP
|
— | — | — | — | — | — | — |
15,000,000
GBP
|
— | — | — |
| Repayments of borrowings, classified as financing activities | — |
5,000,000
GBP
|
— | — | — | — | — | — | — |
71,404,000
GBP
|
— | — | — |
| Dividends paid, classified as financing activities | — |
58,364,000
GBP
|
— | — | — | — | — | — | — |
53,487,000
GBP
|
— | — | — |
| Cash flows from (used in) financing activities | — |
61,388,000
GBP
|
— | — | — | — | — | — | — |
109,936,000
GBP
|
— | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
18,071,000
GBP
|
— | — | — | — | — | — | — |
21,466,000
GBP
|
— | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — |
303,000
GBP
|
— | — | — | — | — | — | — |
19,000
GBP
|
— | — | — |
| Cash and cash equivalents | — | — | — |
27,440,000
GBP
|
— | — | — | — | — | — |
9,672,000
GBP
|
— |
31,157,000
GBP
|