Analysis Of Income And Expense [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2024-01-01 to 2024-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||
| Revenue [abstract] | ||||||||
| Interest income | — |
3,130,000
GBP
|
–
GBP
|
3,130,000
GBP
|
— |
3,471,000
GBP
|
–
GBP
|
3,471,000
GBP
|
| Revenue | — |
378,450,000
GBP
|
381,580,000
GBP
|
3,130,000
GBP
|
— |
220,571,000
GBP
|
252,014,000
GBP
|
31,443,000
GBP
|
| Material income and expense [abstract] | ||||||||
| Investment income | — |
–
GBP
|
–
GBP
|
–
GBP
|
— |
27,972,000
GBP
|
–
GBP
|
27,972,000
GBP
|
| Miscellaneous other operating expense | — |
3,650,000
GBP
|
–
GBP
|
3,650,000
GBP
|
— |
4,615,000
GBP
|
–
GBP
|
4,615,000
GBP
|
| Operating expense | — |
10,596,000
GBP
|
1,736,000
GBP
|
8,860,000
GBP
|
— |
13,283,000
GBP
|
2,167,000
GBP
|
11,116,000
GBP
|
| Expenses by nature [abstract] | ||||||||
| Services expense | — | — | — | — | — | — | — | — |
| Professional fees expense | — |
6,946,000
GBP
|
1,736,000
GBP
|
5,210,000
GBP
|
— |
8,668,000
GBP
|
2,167,000
GBP
|
6,501,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||
| Comprehensive income |
–
GBP
|
389,046,000
GBP
|
383,316,000
GBP
|
5,730,000
GBP
|
–
GBP
|
237,333,000
GBP
|
257,659,000
GBP
|
20,326,000
GBP
|