Statement Of Financial Position [Abstract]
| Concept |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2023-09-03 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2022-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
As at 2021-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment |
3 62 .6
GBP
|
— | — | — | — | — |
3 51. 7
GBP
|
— | — | — | — | — | — | — | — |
| Right-of-use assets |
295,200,000
GBP
|
— | — | — | — | — |
380,300,000
GBP
|
— | — | — | — | — | — | — | — |
| Investment property |
10 . 9
GBP
|
— | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Deferred tax assets |
1 7. 8
GBP
|
— | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Non-current assets |
1 , 3 9 1 .1
GBP
|
— | — | — | — | — |
1, 4 42 . 9
GBP
|
— | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories |
76 8. 0
GBP
|
— | — | — | — | — |
1,078. 4
GBP
|
— | — | — | — | — | — | — | — |
| Trade and other current receivables |
81. 4
GBP
|
— | — | — | — | — |
88,200,000
GBP
|
— | — | — | — | — | — | — | — |
| Cash and cash equivalents |
35 3.3
GBP
|
— | — | — | — | — |
323,000,000
GBP
|
— | — | — |
6 6 2 .7
GBP
|
— | — | — | — |
| Current assets |
1,2 3 4 . 5
GBP
|
— | — | — | — | — |
1,5 5 4 . 0
GBP
|
— | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
4,200,000
GBP
|
— | — | — | — | — |
3 .5
GBP
|
— | — | — | — | — | — | — | — |
| Retained earnings |
46 6.8
GBP
|
— | — | — | — | — |
683,300,000
GBP
|
— | — | — | — | — | — | — | — |
| Share premium |
322 .6
GBP
|
— | — | — | — | — |
2 4 5 .7
GBP
|
— | — | — | — | — | — | — | — |
| Other reserves |
7 3 .1
GBP
|
— | — | — | — | — |
82. 4
GBP
|
— | — | — | — | — | — | — | — |
| Equity |
86 6 .7
GBP
|
4 66.8
GBP
|
4,200,000
GBP
|
7 3 .1
GBP
|
322 .6
GBP
|
2 4 5 .7
GBP
|
1, 0 14 . 9
GBP
|
82,400,000
GBP
|
683,300,000
GBP
|
3,500,000
GBP
|
1, 0 3 4 . 0
GBP
|
3,500,000
GBP
|
70,800,000
GBP
|
2 4 5.7
GBP
|
714 . 0
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions |
6 8 . 2
GBP
|
— | — | — | — | — |
41 . 9
GBP
|
— | — | — | — | — | — | — | — |
| Deferred tax liabilities |
–
GBP
|
— | — | — | — | — |
5 8. 2
GBP
|
— | — | — | — | — | — | — | — |
| Non-current liabilities |
1 , 0 4 3 .7
GBP
|
— | — | — | — | — |
9 42. 0
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Current provisions [abstract] | |||||||||||||||
| Current provisions |
2 . 0
GBP
|
— | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
| Trade and other current payables |
6 8 0. 4
GBP
|
— | — | — | — | — |
9 9 3 . 3
GBP
|
— | — | — | — | — | — | — | — |
| Current liabilities |
7 15 . 2
GBP
|
— | — | — | — | — |
1 , 0 4 0 . 0
GBP
|
— | — | — | — | — | — | — | — |