Disclosure Of Fair Value Measurement [Text Block]
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As at 2023-12-31 |
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As at 2022-12-31 |
As at 2022-12-31 |
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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 |
645,000
GBP
|
399,791,000
GBP
|
13,801,000
GBP
|
2,900,000
GBP
|
1,008,000
GBP
|
422,248,000
GBP
|
117,927,000
GBP
|
8,293,000
GBP
|
13,801,000
GBP
|
9,430,000
GBP
|
425,148,000
GBP
|
140,513,000
GBP
|
645,000
GBP
|
875,000
GBP
|
410,118,000
GBP
|
383,219,000
GBP
|
1,011,000
GBP
|
8,248,000
GBP
|
4,716,000
GBP
|
102,833,000
GBP
|
13,799,000
GBP
|
405,402,000
GBP
|
9,385,000
GBP
|
13,799,000
GBP
|
125,142,000
GBP
|
875,000
GBP
|
394,289,000
GBP
|
2,352,000
GBP
|
7,482,000
GBP
|
100,680,000
GBP
|
5,967,000
GBP
|
365,692,000
GBP
|
13,763,000
GBP
|
388,322,000
GBP
|
8,619,000
GBP
|
122,095,000
GBP
|
13,763,000
GBP
|
967,000
GBP
|
967,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |