Disclosure Of Income Tax [Text Block]
| Concept |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of income tax [text block] | — | — | — | — | — | — | — | — | — | — | — | — |
| Major components of tax expense (income) [abstract] | ||||||||||||
| Current tax expense (income) and adjustments for current tax of prior periods [abstract] | ||||||||||||
| Current tax expense (income) | — | — | — |
200,000
GBP
|
— | — | — | — |
5,500,000
GBP
|
— | — | — |
| Tax expense (income) | — | — | — |
90,700,000
GBP
|
— | — | — | — |
61,100,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income [abstract] | ||||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income |
–
GBP
|
–
GBP
|
— |
1,000,000
GBP
|
1,000,000
GBP
|
–
GBP
|
1,500,000
GBP
|
–
GBP
|
1,500,000
GBP
|
— |
–
GBP
|
–
GBP
|
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income |
–
GBP
|
–
GBP
|
— |
9,400,000
GBP
|
–
GBP
|
9,400,000
GBP
|
–
GBP
|
4,200,000
GBP
|
4,200,000
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 | — | — |
–
GBP
|
— | — | — | — | — | — |
–
GBP
|
— | — |
| Deferred tax liabilities | — | — |
1,472,100,000
GBP
|
— | — | — | — | — | — |
1,364,500,000
GBP
|
— | — |
| Deferred tax expense (income) [abstract] | ||||||||||||
| Deferred tax expense (income) | — | — | — |
90,900,000
GBP
|
— | — | — | — |
55,600,000
GBP
|
— | — | — |
| Reconciliation of accounting profit multiplied by applicable tax rates [abstract] | ||||||||||||
| Disclosure of information about Pillar Two income taxes [abstract] | ||||||||||||
| Disclosure of statement that information is not known or reasonably estimable and entity's progress in assessing exposure to Pillar Two income taxes [text block] | — | — | — | — | — | — | — | — | — | — | — | — |