Disclosure Of Income Tax [Text Block]
| Concept |
As at 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
2021-11-01 to 2022-10-31 |
As at 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
2020-11-01 to 2021-10-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of income tax [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Major components of tax expense (income) [abstract] | ||||||||||||||||||||
| Tax expense (income) | — |
4,400,000
GBP
|
— | — | — | — |
5,700,000
GBP
|
1,300,000
GBP
|
— | — | — | — |
7,300,000
GBP
|
— | — | — | — |
8,300,000
GBP
|
1,000,000
GBP
|
— |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||||||||||
| Income tax relating to exchange differences on translation of foreign operations included in other comprehensive income | — |
400,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
100,000
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — |
800,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
2,200,000
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income | — |
400,000
GBP
|
—
GBP
|
800,000
GBP
|
400,000
GBP
|
—
GBP
|
— | — |
—
GBP
|
— |
—
GBP
|
100,000
GBP
|
2,100,000
GBP
|
2,200,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
— | — |
—
GBP
|
| Disclosure of temporary difference, unused tax losses and unused tax credits [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of temporary difference, unused tax losses and unused tax credits [abstract] | ||||||||||||||||||||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||||||||||||||||||||
| Deferred tax assets and liabilities [abstract] | ||||||||||||||||||||
| Deferred tax assets |
32,300,000
GBP
|
— | — | — | — | — | — | — | — |
18,200,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities |
45,200,000
GBP
|
— | — | — | — | — | — | — | — |
30,700,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Reconciliation of changes in deferred tax liability (asset) [abstract] | ||||||||||||||||||||
| Changes in deferred tax liability (asset) [abstract] | ||||||||||||||||||||
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |