CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - £ / shares	Mar. 31, 2023	Dec. 31, 2022
Ordinary shares, nominal value	£ 0.000025	£ 0.000025
Ordinary shares, authorized	38,357,025	37,683,531
Ordinary shares, issued	38,357,025	37,683,531
Ordinary shares, outstanding	38,357,025	37,683,531
Deferred A shares
Deferred shares, nominal value	£ 1	£ 1
Deferred shares, authorized	63,443	63,443
Deferred shares, issued	63,443	63,443
Deferred shares, outstanding	63,443	63,443
Deferred B shares
Deferred shares, nominal value	£ 0.01	£ 0.01
Deferred shares, authorized	0	570,987
Deferred shares, issued	0	570,987
Deferred shares, outstanding	0	570,987
Deferred C shares
Deferred shares, nominal value	£ 0.000007	£ 0.000007
Deferred shares, authorized	0	27,828,231
Deferred shares, issued	0	27,828,231
Deferred shares, outstanding	0	27,828,231