Statement Of Financial Position [Abstract]
| Concept |
As at 2023-10-31 |
As at 2023-10-31 |
As at 2023-10-31 |
As at 2023-10-31 |
As at 2023-10-31 |
As at 2022-10-31 |
As at 2022-10-31 |
As at 2022-10-31 |
As at 2022-10-31 |
As at 2022-10-31 |
As at 2021-10-31 |
As at 2021-10-31 |
As at 2021-10-31 |
As at 2021-10-31 |
As at 2021-10-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Non-current assets [abstract] | |||||||||||||||
| Property, plant and equipment |
5,200,000
GBP
|
— | — | — | — |
3,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Investment property |
2,890,900,000
GBP
|
— | — | — | — |
2,647,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Deferred tax assets |
6,600,000
GBP
|
— | — | — | — |
800,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Non-current assets |
2,906,800,000
GBP
|
— | — | — | — |
2,653,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||
| Current inventories |
400,000
GBP
|
— | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Trade and other current receivables |
32,700,000
GBP
|
— | — | — | — |
31,200,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
16,900,000
GBP
|
— | — | — | — |
20,900,000
GBP
|
— | — | — | — |
43,200,000
GBP
|
— | — | — | — |
| Current assets |
50,100,000
GBP
|
— | — | — | — |
54,100,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Assets |
2,956,900,000
GBP
|
— | — | — | — |
2,707,500,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital |
2,200,000
GBP
|
— | — | — | — |
2,100,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Retained earnings |
1,858,200,000
GBP
|
— | — | — | — |
1,721,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Share premium |
62,000,000
GBP
|
— | — | — | — |
61,800,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Equity |
1,935,100,000
GBP
|
1,858,200,000
GBP
|
62,000,000
GBP
|
2,200,000
GBP
|
12,700,000
GBP
|
1,793,400,000
GBP
|
2,100,000
GBP
|
8,500,000
GBP
|
61,800,000
GBP
|
1,721,000,000
GBP
|
1,374,900,000
GBP
|
61,300,000
GBP
|
5,100,000
GBP
|
2,100,000
GBP
|
1,306,400,000
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||
| Non-current provisions [abstract] | |||||||||||||||
| Non-current provisions |
2,600,000
GBP
|
— | — | — | — |
2,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
139,200,000
GBP
|
— | — | — | — |
129,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Non-current liabilities |
911,400,000
GBP
|
— | — | — | — |
735,700,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||
| Trade and other current payables |
52,400,000
GBP
|
— | — | — | — |
62,700,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Current liabilities |
110,400,000
GBP
|
— | — | — | — |
178,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Liabilities |
1,021,800,000
GBP
|
— | — | — | — |
914,100,000
GBP
|
— | — | — | — | — | — | — | — | — |