Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||
| Profit (loss) |
—
GBP
|
—
GBP
|
27 .3
GBP
|
—
GBP
|
27 .3
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
56,300,000
GBP
|
—
GBP
|
56,300,000
GBP
|
| Other comprehensive income [abstract] | ||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations |
—
GBP
|
1,400,000
GBP
|
300,000
GBP
|
—
GBP
|
1,100,000
GBP
|
—
GBP
|
3,200,000
GBP
|
—
GBP
|
—
GBP
|
3,200,000
GBP
|
—
GBP
|
—
GBP
|
| Cash flow hedges [abstract] | ||||||||||||
| Reclassification adjustments on cash flow hedges, net of tax |
—
GBP
|
—
GBP
|
4,100,000
GBP
|
4,100,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
4,500,000
GBP
|
4,500,000
GBP
|
—
GBP
|
—
GBP
|
| Other comprehensive income, net of tax, cash flow hedges | — | — |
4,100,000
GBP
|
— | — | — | — | — | — |
4,500,000
GBP
|
— | — |
| Other comprehensive income | — | — |
3,800,000
GBP
|
— | — | — | — | — | — |
7. 7
GBP
|
— | — |
| Comprehensive income |
—
GBP
|
1,400,000
GBP
|
31,100,000
GBP
|
4,100,000
GBP
|
28,400,000
GBP
|
—
GBP
|
3,200,000
GBP
|
—
GBP
|
4,500,000
GBP
|
64,000,000
GBP
|
—
GBP
|
56,300,000
GBP
|