Statement Of Financial Position [Abstract]
| Concept |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2024-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Property, plant and equipment | — | — | — | — | — | — |
91,000,000
GBP
|
91,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Investment property | — | — | — | — | — | — |
9,000,000
GBP
|
10,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other financial assets | — | — | — | — | — | — |
59,360,000,000
GBP
|
50,329,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax assets | — | — | — | — | — | — |
45,000,000
GBP
|
33,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — | — |
115,000,000
GBP
|
91,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — | — |
1,949,000,000
GBP
|
1,859,000,000
GBP
|
— | — | — | — | — | — |
1,782,000,000
GBP
|
— | — | — | — | — | — |
| Assets | — | — | — | — | — | — |
62,448,000,000
GBP
|
53,345,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — | — | — | — |
115,000,000
GBP
|
115,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — | — | — | — | — |
863,000,000
GBP
|
958,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Share premium | — | — | — | — | — | — |
58,000,000
GBP
|
58,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — | — | — | — | — |
1,000,000
GBP
|
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity |
346,000,000
GBP
|
863,000,000
GBP
|
58,000,000
GBP
|
115,000,000
GBP
|
1,000,000
GBP
|
42,000,000
GBP
|
1,423,000,000
GBP
|
1,519,000,000
GBP
|
958,000,000
GBP
|
346,000,000
GBP
|
–
GBP
|
58,000,000
GBP
|
115,000,000
GBP
|
42,000,000
GBP
|
1,548,000,000
GBP
|
1,000,000
GBP
|
58,000,000
GBP
|
41,000,000
GBP
|
346,000,000
GBP
|
989,000,000
GBP
|
115,000,000
GBP
|
| Liabilities [abstract] | |||||||||||||||||||||
| Provisions [abstract] | |||||||||||||||||||||
| Provisions | — | — | — | — | — | — |
111,000,000
GBP
|
46,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Current tax liabilities | — | — | — | — | — | — |
1,000,000
GBP
|
2,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — | — |
96,000,000
GBP
|
64,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — | — |
61,025,000,000
GBP
|
51,826,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — | — |
62,448,000,000
GBP
|
53,345,000,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — |