Disclosure Of Fair Value Measurement [Text Block]
| Concept |
As at 2022-03-31 |
As at 2022-03-31 |
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As at 2021-03-31 |
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As at 2020-03-31 |
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As at 2020-03-31 |
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As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — |
465, 785
GBP
|
— | — | — | — |
462,664,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in fair value measurement, assets [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 |
107,000
GBP
|
5,502,000
GBP
|
1, 150
GBP
|
3,982,000
GBP
|
147 , 112
GBP
|
61,935,000
GBP
|
205,573,000
GBP
|
911,000
GBP
|
1 07
GBP
|
5,502,000
GBP
|
70 ,306
GBP
|
212,3 7 8
GBP
|
3, 970
GBP
|
145, 094
GBP
|
44 7
GBP
|
1, 150
GBP
|
429,000
GBP
|
221,952,000
GBP
|
1 07
GBP
|
5,502,000
GBP
|
1, 150
GBP
|
143,896,000
GBP
|
3,962,000
GBP
|
81,068,000
GBP
|
| Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract] |