Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2024-03-31 |
As at 2023-03-31 |
As at 2022-03-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
3 .0
GBP
|
4,400,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
2,200,000
GBP
|
2 .0
GBP
|
— |
| Investment property [abstract] | |||
| Investment property |
2,408,500,000
GBP
|
2,643,300,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current derivative financial assets |
200,000
GBP
|
–
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
36,700,000
GBP
|
45,800,000
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
11,600,000
GBP
|
18,500,000
GBP
|
49,000,000
GBP
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners |
65,700,000
GBP
|
123,000,000
GBP
|
— |
| Miscellaneous assets [abstract] | |||
| Investments other than investments accounted for using equity method |
3,200,000
GBP
|
2 .1
GBP
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
854,800,000
GBP
|
859. 1
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
–
GBP
|
49,800,000
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
93,000,000
GBP
|
107 .8
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
191,900,000
GBP
|
191,600,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
977 .3
GBP
|
1,219,500,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
2,531,400,000
GBP
|
2,839. 1
GBP
|
— |
| Liabilities |
982,500,000
GBP
|
1,051,400,000
GBP
|
— |
| Assets (liabilities) |
1,548,900,000
GBP
|
1,787,700,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
114,000,000
GBP
|
187 .3
GBP
|
— |
| Current liabilities |
93,000,000
GBP
|
157 .6
GBP
|
— |
| Assets less current liabilities [abstract] |