Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-03-31 |
As at 2022-03-31 |
As at 2021-03-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
61 . 3
GBP
|
38 . 3
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
265 . 6
GBP
|
26 2 . 1
GBP
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
1 .0
GBP
|
–
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
93 . 0
GBP
|
85 .6
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
2 5 7. 8
GBP
|
12 3.0
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
1 57. 5
GBP
|
2 28 .0
GBP
|
113 .6
GBP
|
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
293 . 4
GBP
|
280. 9
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
127 . 7
GBP
|
133. 9
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
1 . 3
GBP
|
0 . 5
GBP
|
— |
| Current interest payable |
6 . 0
GBP
|
0 . 8
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
10,000,000
GBP
|
10,000,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
1 ,7 8 2 . 2
GBP
|
1,711,300,000
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
12 . 5
GBP
|
7. 0
GBP
|
— |
| Reserve of gains and losses on hedging instruments that hedge investments in equity instruments |
0 . 5
GBP
|
0 .1
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Capital redemption reserve |
–
GBP
|
–
GBP
|
— |
| Merger reserve |
1,40 0.0
GBP
|
1 , 4 0 0 .0
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
992 .6
GBP
|
8 5 9. 1
GBP
|
— |
| Liabilities |
58 8 . 4
GBP
|
530. 9
GBP
|
— |
| Assets (liabilities) |
404. 2
GBP
|
328 . 2
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
508,800,000
GBP
|
4 43 .6
GBP
|
— |
| Current liabilities |
16 4 . 5
GBP
|
1 5 5 . 0
GBP
|
— |
| Assets less current liabilities [abstract] |