Statement Of Cash Flows [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Increase (decrease) in working capital |
54,500,000
GBP
|
2,100,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Proceeds from exercise of options |
36,800,000
GBP
|
47,100,000
GBP
|
| Proceeds from issue of ordinary shares |
5,300,000
GBP
|
6,600,000
GBP
|