Statement Of Changes In Equity [Abstract]
| Concept |
2022-01-01 to 2022-12-30 |
2022-01-01 to 2022-12-30 |
2022-01-01 to 2022-12-30 |
2022-01-01 to 2022-12-30 |
2022-01-01 to 2022-12-30 |
2022-01-01 to 2022-12-30 |
2020-12-26 to 2021-12-31 |
2020-12-26 to 2021-12-31 |
2020-12-26 to 2021-12-31 |
2020-12-26 to 2021-12-31 |
2020-12-26 to 2021-12-31 |
2020-12-26 to 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||||
| Statement of changes in equity [line items] | ||||||||||||
| Increase (decrease) through exercise of options, equity |
–
GBP
|
500,000
GBP
|
–
GBP
|
500,000
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
800,000
GBP
|
| Sale or issue of treasury shares |
–
GBP
|
–
GBP
|
–
GBP
|
100,000
GBP
|
–
GBP
|
100,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
200,000
GBP
|