Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
As at 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 2023-12-31 |
As at 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 |
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 |
2022-01-01 to 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 |
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 |
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 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | ||||||||||||||||||||||||||||||||||||||||||
| Equity | — |
180,635,000
GBP
|
— |
255,758,000
GBP
|
3,449,000
GBP
|
— | — |
406,184,000
GBP
|
— |
19,297,000
GBP
|
7,463,000
GBP
|
— |
233,767,000
GBP
|
— | — | — | — | — |
405,463,000
GBP
|
3,449,000
GBP
|
201,817,000
GBP
|
19,209,000
GBP
|
7,463,000
GBP
|
— |
155,199,000
GBP
|
3,449,000
GBP
|
7,463,000
GBP
|
—
GBP
|
—
GBP
|
280,655,000
GBP
|
—
GBP
|
279,512,000
GBP
|
3,449,000
GBP
|
404,726,000
GBP
|
—
GBP
|
1,143,000
GBP
|
1,143,000
GBP
|
154,056,000
GBP
|
19,073,000
GBP
|
7,463,000
GBP
|
404,726,000
GBP
|
19,073,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) |
54,008,000
GBP
|
— |
—
GBP
|
— | — |
54,008,000
GBP
|
—
GBP
|
— |
—
GBP
|
— | — |
—
GBP
|
— |
—
GBP
|
47,615,000
GBP
|
47,615,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Comprehensive income |
54,008,000
GBP
|
— |
—
GBP
|
— | — |
54,008,000
GBP
|
—
GBP
|
— |
—
GBP
|
— | — |
—
GBP
|
— |
—
GBP
|
47,615,000
GBP
|
47,615,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Issue of equity |
809,000
GBP
|
— |
—
GBP
|
— | — |
—
GBP
|
721,000
GBP
|
— |
88,000
GBP
|
— | — |
—
GBP
|
— |
136,000
GBP
|
873,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — |
737,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity |
67,000
GBP
|
— |
—
GBP
|
— | — |
67,000
GBP
|
—
GBP
|
— |
—
GBP
|
— | — |
—
GBP
|
— |
—
GBP
|
997,000
GBP
|
997,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — |
—
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |