Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2022-09-30 |
As at 2021-09-30 |
As at 2020-09-30 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
4,200,000
GBP
|
1. 4
GBP
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets and goodwill |
0. 5
GBP
|
500,000
GBP
|
— |
| Investment property [abstract] | |||
| Investment property |
2 ,7 75 . 9
GBP
|
2 ,17 9 . 2
GBP
|
— |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract] | |||
| Investments in joint ventures reported in separate financial statements |
38 .5
GBP
|
29,400,000
GBP
|
— |
| Investments in associates reported in separate financial statements |
16 .7
GBP
|
15 . 5
GBP
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current net defined benefit asset |
9,800,000
GBP
|
3,500,000
GBP
|
— |
| Trade and other current receivables [abstract] | |||
| Trade and other current receivables |
40,500,000
GBP
|
38. 5
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 |
6 9 .1
GBP
|
71. 7
GBP
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
4 53. 8
GBP
|
595 . 2
GBP
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
95,900,000
GBP
|
3 1 7. 6
GBP
|
3 6 9 .1
GBP
|
| Miscellaneous current assets [abstract] | |||
| Current derivative financial assets |
56,500,000
GBP
|
–
GBP
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
1 , 3 17. 6
GBP
|
1 ,347 .5
GBP
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings |
40,000,000
GBP
|
–
GBP
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other non-current payables [abstract] | |||
| Trade and other non-current payables |
2,200,000
GBP
|
0 .6
GBP
|
— |
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
10 5 . 9
GBP
|
10 9 . 8
GBP
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Current derivative financial liabilities |
–
GBP
|
4,500,000
GBP
|
— |
| Issued capital [abstract] | |||
| Issued capital |
3 7.1
GBP
|
3 7.1
GBP
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
1, 0 59 . 6
GBP
|
8 6 7. 5
GBP
|
— |
| Accumulated other comprehensive income [abstract] | |||
| Reserve of cash flow hedges |
3 2 .1
GBP
|
3 . 3
GBP
|
— |
| Miscellaneous equity [abstract] | |||
| Capital redemption reserve |
300,000
GBP
|
300,000
GBP
|
— |
| Merger reserve |
2 0 .1
GBP
|
2 0 .1
GBP
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
3 , 5 79 .1
GBP
|
3,2 72 .2
GBP
|
— |
| Liabilities |
1, 6 12 . 3
GBP
|
1,5 3 3 . 2
GBP
|
— |
| Assets (liabilities) |
1, 9 6 6 . 8
GBP
|
1, 73 9 . 0
GBP
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
663. 2
GBP
|
9 6 7. 3
GBP
|
— |
| Current liabilities |
15 4 . 5
GBP
|
11 4 . 5
GBP
|
— |
| Assets less current liabilities [abstract] |