Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
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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 |
As at 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 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of equity [abstract] | ||||||||||||||||||||||||||||||
| Disclosure of fair value measurement of 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
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |