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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||||||
| Revenue [abstract] | ||||||||||||||
| Revenue | — | — |
10,560,000
GBP
|
— | — | — | — | — | — | — | — | — |
4,625,000
GBP
|
— |
| Material income and expense [abstract] | ||||||||||||||
| Research and development expense | — | — |
71,884,000
GBP
|
— | — | — | — | — | — | — | — | — |
56,916,000
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
|
31,000
GBP
|
—
GBP
|
—
GBP
|
31,000
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
94,000
GBP
|
77,000
GBP
|
17,000
GBP
|
| Other comprehensive income, net of tax, hedges of net investments in foreign operations | — | — |
31,000
GBP
|
— | — | — | — | — | — | — | — | — |
94,000
GBP
|
— |
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||||||
| Comprehensive income | — | — |
163,897,000
GBP
|
— | — | — | — | — | — | — | — | — |
107,7 49
GBP
|
— |