Statement Of Financial Position [Abstract]
| Concept |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 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 |
As at 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||||||||
| Investment property | — |
681,682,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
938,797,000
GBP
|
— | — | — | — | — | — | — |
740,207,000
GBP
|
— | — |
| Non-current assets | — |
796,961,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,055,442,000
GBP
|
— | — | — | — | — | — | — |
825,693,000
GBP
|
— | — |
| Current assets [abstract] | ||||||||||||||||||||||||
| Trade and other current receivables | — |
24,935,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
33,776,000
GBP
|
— | — | — | — | — | — | — |
27,648,000
GBP
|
— | — |
| Current tax assets, current | — |
7,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
338,000
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — |
| Cash and cash equivalents | — |
50,925,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
43,484,000
GBP
|
— | — | — | — | — | — | — |
167,227,000
GBP
|
— | — |
| Current assets | — |
75,895,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
79,687,000
GBP
|
— | — | — | — | — | — | — |
195,323,000
GBP
|
— | — |
| Assets | — |
872,856,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,135,129,000
GBP
|
— | — | — | — | — | — | — |
1,021,016,000
GBP
|
— | — |
| Equity and liabilities [abstract] | ||||||||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||||||||
| Issued capital | — |
1,233,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
1,223,000
GBP
|
— | — | — | — | — | — | — |
1,478,000
GBP
|
— | — |
| Retained earnings | — |
437,221,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
367,505,000
GBP
|
— | — | — | — | — | — | — |
326,608,000
GBP
|
— | — |
| Share premium | — |
116,619,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
112,654,000
GBP
|
— | — | — | — | — | — | — |
107,990,000
GBP
|
— | — |
| Treasury shares | — |
848,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
–
GBP
|
— | — |
| Other reserves | — |
291,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
291,000
GBP
|
— | — | — | — | — | — | — |
291,000
GBP
|
— | — |
| Equity |
46,416,000
GBP
|
608,675,000
GBP
|
116,619,000
GBP
|
1,233,000
GBP
|
848,000
GBP
|
7,743,000
GBP
|
437,221,000
GBP
|
291,000
GBP
|
7,743,000
GBP
|
–
GBP
|
1,223,000
GBP
|
112,654,000
GBP
|
367,505,000
GBP
|
687,043,000
GBP
|
197,627,000
GBP
|
291,000
GBP
|
7,478,000
GBP
|
–
GBP
|
164,316,000
GBP
|
326,608,000
GBP
|
291,000
GBP
|
608,161,000
GBP
|
1,478,000
GBP
|
107,990,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||||||||
| Deferred tax liabilities | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
13,569,000
GBP
|
— | — |
| Non-current liabilities | — |
232,266,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
403,442,000
GBP
|
— | — | — | — | — | — | — |
364,802,000
GBP
|
— | — |
| Current liabilities [abstract] | ||||||||||||||||||||||||
| Trade and other current payables | — |
31,232,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
43,986,000
GBP
|
— | — | — | — | — | — | — |
46,764,000
GBP
|
— | — |
| Current tax liabilities, current | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — |
655,000
GBP
|
— | — |
| Current liabilities | — |
31,915,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
44,644,000
GBP
|
— | — | — | — | — | — | — |
48,053,000
GBP
|
— | — |
| Liabilities | — |
264,181,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
448,086,000
GBP
|
— | — | — | — | — | — | — |
412,855,000
GBP
|
— | — |