Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-06-30 |
As at 2022-06-30 |
As at 2021-06-30 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
6,500,000
GBP
|
9,100,000
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
86,900,000
GBP
|
90,900,000
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in associates reported in separate financial statements |
2,300,000
GBP
|
2,100,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
70,400,000
GBP
|
74,300,000
GBP
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets at fair value through profit or loss [abstract] | |||
| Non-current financial assets at fair value through profit or loss |
54,100,000
GBP
|
39,300,000
GBP
|
— |
| Categories of current financial assets [abstract] | |||
| Current financial assets at fair value through profit or loss [abstract] | |||
| Current financial assets at fair value through profit or loss |
55,800,000
GBP
|
32,300,000
GBP
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash [abstract] | |||
| Cash |
40,900,000
GBP
|
57,400,000
GBP
|
— |
| Cash and cash equivalents |
478,600,000
GBP
|
552,000,000
GBP
|
456,100,000
GBP
|
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
24,200,000
GBP
|
36,400,000
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
200,000
GBP
|
5,200,000
GBP
|
— |
| Miscellaneous liabilities [abstract] | |||
| Deposit liabilities | — | — | — |
| Deposits from banks |
380,900,000
GBP
|
268,900,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
100,000
GBP
|
100,000
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
875,400,000
GBP
|
901,000,000
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of exchange differences on translation |
7,700,000
GBP
|
33,200,000
GBP
|
— |
| Reserve of cash flow hedges |
–
GBP
|
4,900,000
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
1,0 08.7
GBP
|
1,0 98.2
GBP
|
— |
| Liabilities |
95,700,000
GBP
|
131,400,000
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
834,700,000
GBP
|
923,700,000
GBP
|
— |
| Current liabilities |
82,700,000
GBP
|
116,800,000
GBP
|
— |
| Assets less current liabilities [abstract] |