Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
93,990,000
GBP
|
93,990,000
GBP
|
25,796,000
GBP
|
–
GBP
|
–
GBP
|
25,796,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||
| Financial assets measured at fair value through other comprehensive income [abstract] | ||||||||||||||||
| Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income | — | — | — | — | — | — |
670,000
GBP
|
— | — | — | — |
267,000
GBP
|
— | — | — | — |
| Other comprehensive income | — | — | — | — | — | — |
595,000
GBP
|
— | — | — | — |
443,000
GBP
|
— | — | — | — |
| Comprehensive income |
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
66,796,000
GBP
|
94,585,000
GBP
|
27,789,000
GBP
|
8,641,000
GBP
|
–
GBP
|
–
GBP
|
25,353,000
GBP
|
–
GBP
|
–
GBP
|
16,712,000
GBP
|
–
GBP
|