Analysis Of Income And Expense [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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Interest income | — | — |
1,900,000
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
—
GBP
|
—
GBP
|
— |
| Material income and expense [abstract] | ||||||||||||||
| Investment income | — | — |
22 .0
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
5 3 .7
GBP
|
5 3 .7
GBP
|
— |
| Interest expense | — | — |
4 .7
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
12 . 3
GBP
|
12 . 3
GBP
|
— |
| Operating expense | — | — |
16 8 . 2
GBP
|
— | — | — | — | — | — | — |
3 .9
GBP
|
16 7. 4
GBP
|
17 1. 3
GBP
|
— |
| Sales and marketing expense | — | — |
38 .4
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
4 6 .9
GBP
|
4 6 .9
GBP
|
— |
| Fee and commission income (expense) [abstract] | ||||||||||||||
| Fee and commission income [abstract] | ||||||||||||||
| Other fee and commission income | — | — |
4 .1
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
3,500,000
GBP
|
3,500,000
GBP
|
— |
| Expenses by nature [abstract] | ||||||||||||||
| Classes of employee benefits expense [abstract] | ||||||||||||||
| Employee benefits expense | — | — |
8 5 .9
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
7 7.7
GBP
|
7 7. 7
GBP
|
— |
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract] | ||||||||||||||
| Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss | — | — |
1 7. 0
GBP
|
— | — | — | — | — | — | — |
3 .9
GBP
|
13 . 9
GBP
|
1 7. 8
GBP
|
— |
| Other expenses, by nature | — | — |
28,400,000
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
2 7. 7
GBP
|
2 7. 7
GBP
|
— |
| 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
|
—
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
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||||||
| Share of profit (loss) of associates accounted for using equity method | — | — |
400,000
GBP
|
— | — | — | — | — | — | — |
—
GBP
|
0 .9
GBP
|
0 .9
GBP
|
— |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| 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 owners of parent, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — |
1 .1
GBP
|
— | — | — | — | — | — | — |
3 .9
GBP
|
66 .5
GBP
|
62,600,000
GBP
|
— |