Statement Of Cash Flows [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|
| Statement of cash flows [abstract] | |||
| Cash flows from (used in) investing activities [abstract] | |||
| Dividends received from associates, classified as investing activities |
4,000,000
GBP
|
4,000,000
GBP
|
12,000,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | |||
| Payments for share issue costs |
16,000,000
GBP
|
–
GBP
|
–
GBP
|