Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2025-03-31 |
As at 2024-03-31 |
As at 2023-03-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
3,400,000
GBP
|
3,000,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
1 .1
GBP
|
2,200,000
GBP
|
— |
| Investment property [abstract] | |||
| Investment property |
2,351,700,000
GBP
|
2,408,500,000
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current derivative financial assets |
–
GBP
|
200,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
32,800,000
GBP
|
36. 7
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
32,700,000
GBP
|
11,600,000
GBP
|
18,500,000
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 |
45,200,000
GBP
|
65,700,000
GBP
|
— |
| Miscellaneous assets [abstract] | |||
| Investments other than investments accounted for using equity method |
3,300,000
GBP
|
3,200,000
GBP
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
761,400,000
GBP
|
854,800,000
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
79,900,000
GBP
|
–
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
92,200,000
GBP
|
93,000,000
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
0. 1
GBP
|
–
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
192. 1
GBP
|
191,900,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
943,600,000
GBP
|
977 .3
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
2,4 70.5
GBP
|
2,531,400,000
GBP
|
— |
| Liabilities |
968,300,000
GBP
|
982,500,000
GBP
|
— |
| Assets (liabilities) |
1,502,200,000
GBP
|
1,548,900,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
11 0.7
GBP
|
114,000,000
GBP
|
— |
| Current liabilities |
172,200,000
GBP
|
93. 0
GBP
|
— |
| Assets less current liabilities [abstract] |