Disclosure Of Fair Value Measurement [Text Block]
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As at 2025-03-31 |
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As at 2023-03-31 |
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| Disclosure of fair value measurement [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of assets [abstract] | ||||||||||||||||||
| Disclosure of fair value measurement of assets [line items] | ||||||||||||||||||
| Assets | — | — | — | — |
614,394,000
GBP
|
— | — | — | — | — | — |
605,123,000
GBP
|
— | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [abstract] | ||||||||||||||||||
| Disclosure of fair value measurement of liabilities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of fair value measurement of liabilities [abstract] | ||||||||||||||||||
| Disclosure of fair value measurement of liabilities [line items] | ||||||||||||||||||
| Liabilities | — | — | — | — |
190,928,000
GBP
|
— | — | — | — | — | — |
193,303,000
GBP
|
— | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, liabilities [abstract] | ||||||||||||||||||
| 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 |
4,409,000
GBP
|
148,442,000
GBP
|
18,931,000
GBP
|
714,000
GBP
|
423,466,000
GBP
|
250,970,000
GBP
|
18,931,000
GBP
|
-
GBP
|
137,510,000
GBP
|
250,970,000
GBP
|
4,409,000
GBP
|
411,820,000
GBP
|
18,931,000
GBP
|
437,569,000
GBP
|
250,970,000
GBP
|
4,409,000
GBP
|
163,259,000
GBP
|
-
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |