Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) |
—
GBP
|
—
GBP
|
6 .9
GBP
|
—
GBP
|
6 .9
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
3 .9
GBP
|
6 5 .1
GBP
|
61. 2
GBP
|
61. 2
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
|
—
GBP
|
5,800,000
GBP
|
—
GBP
|
—
GBP
|
5,800,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
1,400,000
GBP
|
—
GBP
|
1. 4
GBP
|
1. 4
GBP
|
—
GBP
|
| Comprehensive income |
—
GBP
|
—
GBP
|
1 .1
GBP
|
—
GBP
|
6 .9
GBP
|
5,800,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
1. 4
GBP
|
3 .9
GBP
|
66 .5
GBP
|
62,600,000
GBP
|
61. 2
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
1 .1
GBP
|
— | — | — | — | — | — | — |
3 .9
GBP
|
66 .5
GBP
|
62,600,000
GBP
|
— |