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 |
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 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||
| Material income and expense [abstract] | ||||||||||||
| Gains (losses) on change in fair value of derivatives [abstract] | ||||||||||||
| Losses on change in fair value of derivatives | — |
7. 0
GBP
|
— | — | — | — | — |
8. 4
GBP
|
— | — | — | — |
| Expenses by nature [abstract] | ||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||
| Depreciation and amortisation expense [abstract] | ||||||||||||
| Amortisation expense | — |
0 .9
GBP
|
— | — | — | — | — |
0 .9
GBP
|
— | — | — | — |
| Disclosure of attribution of expenses by nature to their function [text block] | — | — | — | — | — | — | — | — | — | — | — | — |
| Disclosure of attribution of expenses by nature to their function [abstract] | ||||||||||||
| Disclosure of attribution of expenses by nature to their function [line items] | ||||||||||||
| Miscellaneous other comprehensive income [abstract] | ||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract] | ||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
—
GBP
|
0 .1
GBP
|
—
GBP
|
—
GBP
|
0 .1
GBP
|
—
GBP
|
—
GBP
|
300,000
GBP
|
—
GBP
|
1 .1
GBP
|
—
GBP
|
1,400,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||
| Comprehensive income |
—
GBP
|
43,800,000
GBP
|
—
GBP
|
2,500,000
GBP
|
0 .1
GBP
|
41,400,000
GBP
|
—
GBP
|
3 1 .1
GBP
|
4 .1
GBP
|
28. 4
GBP
|
—
GBP
|
1. 4
GBP
|