Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2025-03-31 |
As at 2024-03-31 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Property, plant and equipment [abstract] | ||
| Property, plant and equipment |
21. 2
GBP
|
21,300,000
GBP
|
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | ||
| Investments in associates reported in separate financial statements |
2,600,000
GBP
|
1 .4
GBP
|
| Trade and other non-current receivables [abstract] | ||
| Other non-current receivables |
1 .7
GBP
|
2,500,000
GBP
|
| Miscellaneous non-current assets [abstract] | ||
| Non-current net defined benefit asset |
700,000
GBP
|
2,700,000
GBP
|
| Non-current investments other than investments accounted for using equity method |
48,600,000
GBP
|
49,400,000
GBP
|
| Trade and other current receivables [abstract] | ||
| Trade and other current receivables |
2 1 9.0
GBP
|
230 .1
GBP
|
| Cash and cash equivalents [abstract] | ||
| Cash and cash equivalents |
38 6.6
GBP
|
375 .3
GBP
|
| Miscellaneous current assets [abstract] | ||
| Current investments |
34 .7
GBP
|
25 .4
GBP
|
| Trade and other current payables [abstract] | ||
| Trade and other current payables |
273. 3
GBP
|
272 . 8
GBP
|
| Miscellaneous non-current liabilities [abstract] | ||
| Other non-current liabilities |
3 1 .1
GBP
|
3 3.0
GBP
|
| Miscellaneous current liabilities [abstract] | ||
| Other current liabilities |
33,000,000
GBP
|
24 . 2
GBP
|
| Issued capital [abstract] | ||
| Issued capital |
4 03 .7
GBP
|
418. 7
GBP
|
| Retained earnings [abstract] | ||
| Retained earnings |
36 8.0
GBP
|
3 30. 5
GBP
|
| Net assets (liabilities) [abstract] | ||
| Assets |
12, 212.1
GBP
|
11, 118.5
GBP
|
| Net current assets (liabilities) [abstract] | ||
| Current assets |
12 ,04 4 .6
GBP
|
1 0,94 0.7
GBP
|
| Current liabilities |
11,686,900,000
GBP
|
1 0,59 4.9
GBP
|
| Assets less current liabilities [abstract] |