Statement Of Financial Position [Abstract]
| Concept |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||||||||
| Property, plant and equipment | — |
16,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
19,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Investment property | — |
6,130,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
5,229,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — |
22,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — |
57,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
88,000,000
GBP
|
— | — | — |
125,000,000
GBP
|
— | — | — | — | — | — |
| Assets | — |
8,875,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
7,974,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||||||||
| Issued capital | — |
253,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
235,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Retained earnings | — |
3,642,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
3,528,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Share premium | — |
1,589,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
1,310,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Other reserves | — |
13,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
13,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity attributable to owners of parent | — |
5,710,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
5,29 9
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Non-controlling interests | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
13,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Equity |
213,000,000
GBP
|
5,710,000,000
GBP
|
–
GBP
|
1,589,000,000
GBP
|
253,000,000
GBP
|
3,642,000,000
GBP
|
5,710,000,000
GBP
|
–
GBP
|
13,000,000
GBP
|
213,000,000
GBP
|
5,299,000,000
GBP
|
13,000,000
GBP
|
3,528,000,000
GBP
|
13,000,000
GBP
|
1,310,000,000
GBP
|
235,000,000
GBP
|
5,312,000,000
GBP
|
–
GBP
|
5,512,000,000
GBP
|
13,000,000
GBP
|
5,525,000,000
GBP
|
1,308,000,000
GBP
|
234,000,000
GBP
|
2,000,000
GBP
|
13,000,000
GBP
|
3,742,000,000
GBP
|
213,000,000
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||||||||
| Current tax liabilities | — |
6,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
8,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — |
3,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
5,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Liabilities | — |
3,165,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — |
2,662,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — |