Disclosure Of Income Tax [Text Block]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|
| Disclosure of income tax [text block] | — |
|
— | — | — | — | — | — |
| Major components of tax expense (income) [abstract] | ||||||||
| Tax expense (income) | — |
100,000
GBP
|
–
GBP
|
100,000
GBP
|
— |
42,000,000
GBP
|
28,000,000
GBP
|
14,000,000
GBP
|
| Income tax relating to components of other comprehensive income [abstract] | ||||||||
| Income tax relating to changes in revaluation surplus of property, plant and equipment, right-of-use assets and intangible assets included in other comprehensive income | — |
400,000
GBP
|
— | — | — | — |
1,000,000
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 |
2,800,000
GBP
|
— | — | — |
2,600,000
GBP
|
— | — | — |
| Deferred tax liabilities |
110,500,000
GBP
|
— | — | — |
109,900,000
GBP
|
— | — | — |
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |