Statement Of Changes In Equity [Abstract]
| Concept |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||
| Equity |
281,000
GBP
|
— | — | — | — | — |
1,094,000
GBP
|
73 ,19 3
GBP
|
46 , 236
GBP
|
3 2 7, 7 2 9
GBP
|
— |
370,365,000
GBP
|
7 5,980
GBP
|
— |
—
GBP
|
382,000
GBP
|
330,698,000
GBP
|
4 9, 3 3 4
GBP
|
40 0, 517
GBP
|
73, 299
GBP
|
4 6, 236
GBP
|
— | — | — | — | — | — | — |
51,836,000
GBP
|
282 ,879
GBP
|
—
GBP
|
4 3 3
GBP
|
4 6, 23 6
GBP
|
72, 899
GBP
|
2 1 6, 013
GBP
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
—
GBP
|
—
GBP
|
71 ,998
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — |
71,998,000
GBP
|
— | — |
—
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
—
GBP
|
—
GBP
|
178 ,1 07
GBP
|
—
GBP
|
—
GBP
|
17 8 ,107
GBP
|
— | — | — | — | — | — | — |
| Other comprehensive income | — |
—
GBP
|
—
GBP
|
—
GBP
|
618,000
GBP
|
—
GBP
|
— | — | — | — |
618,000
GBP
|
— | — |
—
GBP
|
— | — | — | — | — | — | — |
2, 502
GBP
|
—
GBP
|
—
GBP
|
2, 502
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income | — | — | — | — | — | — | — | — | — | — |
72 ,616
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
180,609,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Issue of equity | — |
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
175,000
GBP
|
— | — | — | — |
175,000
GBP
|
— | — |
—
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
—
GBP
|
—
GBP
|
400,000
GBP
|
400,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
—
GBP
|
—
GBP
|
72 ,60 4
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — |
72 ,6 04
GBP
|
— | — |
—
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
—
GBP
|
—
GBP
|
62,12 8
GBP
|
—
GBP
|
—
GBP
|
62 ,128
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
—
GBP
|
—
GBP
|
59,000
GBP
|
—
GBP
|
—
GBP
|
— | — | — | — |
59,000
GBP
|
— | — |
—
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
—
GBP
|
—
GBP
|
2 ,4 58
GBP
|
—
GBP
|
—
GBP
|
2 ,4 58
GBP
|
— | — | — | — | — | — | — |