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 |
2021-04-01 to 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 |
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 |
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 |
As at 2020-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Statement of changes in 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
|
81,068,000
GBP
|
221,952,000
GBP
|
1 07
GBP
|
5,502,000
GBP
|
1, 150
GBP
|
143,896,000
GBP
|
3,962,000
GBP
|
| Changes in equity [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — |
-
GBP
|
-
GBP
|
464,000
GBP
|
35,467,000
GBP
|
-
GBP
|
— | — |
-
GBP
|
— | — | — |
35,003,000
GBP
|
— | — |
-
GBP
|
— | — | — | — | — | — | — |
-
GBP
|
-
GBP
|
— |
-
GBP
|
32,559,000
GBP
|
-
GBP
|
-
GBP
|
32,577,000
GBP
|
1 8
GBP
|
— | — | — | — | — | — | — | — |
| Issue of equity | — |
-
GBP
|
2,018,000
GBP
|
-
GBP
|
-
GBP
|
14,000
GBP
|
— | — |
-
GBP
|
— | — | — |
2,032,000
GBP
|
— | — |
-
GBP
|
— | — | — | — | — | — | — |
-
GBP
|
-
GBP
|
— |
-
GBP
|
1,206,000
GBP
|
8,000
GBP
|
1, 198
GBP
|
-
GBP
|
-
GBP
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
-
GBP
|
-
GBP
|
-
GBP
|
44, 787
GBP
|
-
GBP
|
— | — |
-
GBP
|
— | — | — |
44, 787
GBP
|
— | — |
-
GBP
|
— | — | — | — | — | — | — |
-
GBP
|
-
GBP
|
— |
-
GBP
|
44, 708
GBP
|
-
GBP
|
-
GBP
|
44, 708
GBP
|
-
GBP
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through share-based payment transactions, equity | — |
-
GBP
|
-
GBP
|
-
GBP
|
960,000
GBP
|
-
GBP
|
— | — |
-
GBP
|
— | — | — |
960,000
GBP
|
— | — |
-
GBP
|
— | — | — | — | — | — | — |
-
GBP
|
-
GBP
|
— |
-
GBP
|
1,3 77
GBP
|
-
GBP
|
-
GBP
|
1,377,000
GBP
|
-
GBP
|
— | — | — | — | — | — | — | — |