Statement Of Cash Flows [Abstract]
| Concept |
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 |
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 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||
| Profit (loss) |
87,556,000
GBP
|
230,517,000
GBP
|
— |
28,234,000
GBP
|
114,727,000
GBP
|
— |
107,484,000
GBP
|
24,318,000
GBP
|
289,891,000
GBP
|
206,725,000
GBP
|
— |
| Cash flows from (used in) operating activities | — |
125,620,000
GBP
|
— | — | — | — |
1,956,000
GBP
|
— | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||
| Cash flows from (used in) investing activities | — |
49,048,000
GBP
|
— | — | — | — |
4,713,000
GBP
|
— | — | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||
| Proceeds from issuing shares | — |
—
GBP
|
— | — | — | — |
10,974,000
GBP
|
— | — | — | — |
| Proceeds from borrowings, classified as financing activities | — |
—
GBP
|
— | — | — | — |
138,779,000
GBP
|
— | — | — | — |
| Repayments of borrowings, classified as financing activities | — |
137,439,000
GBP
|
— | — | — | — |
153,885,000
GBP
|
— | — | — | — |
| Dividends paid, classified as financing activities | — |
29,753,000
GBP
|
— | — | — | — |
34,217,000
GBP
|
— | — | — | — |
| Cash flows from (used in) financing activities | — |
175,380,000
GBP
|
— | — | — | — |
48,634,000
GBP
|
— | — | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
712,000
GBP
|
— | — | — | — |
41,965,000
GBP
|
— | — | — | — |
| Cash and cash equivalents | — | — |
51,603,000
GBP
|
— | — |
52,315,000
GBP
|
— | — | — | — |
94,280,000
GBP
|