Consolidated Balance Sheets (Parenthetical) - GBP (£)	Dec. 31, 2023	Dec. 31, 2022
Shareholders' equity
Common stock, par value (in pounds per share)	£ 0.002	£ 0.002
Common stock, shares issued (in shares)	49,725,649	48,088,346
Common stock, shares outstanding (in shares)	49,725,649	48,088,346
Deferred shares, par value (in pounds per share)	£ 0.0001	£ 0.0001
Deferred stock, shares authorized (in shares)	5,793,501	5,793,501
Deferred stock, shares issued (in shares)	5,793,501	5,793,501
Deferred stock, outstanding (in shares)	5,793,501	5,793,501
Maximum [Member]
Shareholders' equity
Authority to allot nominal value	£ 109,335	£ 109,335