Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	IPO	Over-Allotment Option	Preferred Stock Series A Preferred	Ordinary Shares	Ordinary Shares IPO	Ordinary Shares Over-Allotment Option	Additional paid-in capital	Additional paid-in capital IPO	Additional paid-in capital Over-Allotment Option	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (in shares) at Jan. 29, 2021				0	7,500,000
Beginning balance at Jan. 29, 2021	$ (4,651)			$ 0	$ 21			$ 0			$ (90)	$ (4,582)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)				22,272,721		16,500,000	2,475,000
Shares issued	241,597	$ 298,077	$ 46,059	$ 241,597		$ 47	$ 7		$ 298,030	$ 46,052
Issuance of Series A convertible preferred shares upon conversion of debt (in shares)				568,181
Issuance of Series A convertible preferred shares upon conversion of debt	6,250			$ 6,250
Acquisition of Centessa Subsidiaries (in shares)					44,758,079
Acquisition of Centessa Subsidiaries	262,698				$ 123			262,575
Forgiveness of convertible term loan	6,199							6,199
Repurchase of ordinary shares concurrent with acquisition of Centessa Subsidiaries (in shares)					(4,450,000)
Repurchase of ordinary shares concurrent with acquisition of Centessa Subsidiaries	(12)				$ (12)
Conversion of Series A convertible preferred shares into ordinary shares (in shares)				(22,840,902)	22,840,902
Conversion of Series A convertible preferred shares into ordinary shares	0			$ (247,847)	$ 65			247,782
Stock option exercises (in shares)					50,000
Stock option exercises	292							292
Vesting of ordinary shares (in shares)					226,444
Vesting of ordinary shares	0				$ 1			(1)
Share-based compensation expense	10,093							10,093
Foreign currency translation adjustment	2,828										2,828
Net loss	(320,297)											(320,297)
Ending balance (in shares) at Sep. 30, 2021				0	89,900,425
Ending balance at Sep. 30, 2021	549,133			$ 0	$ 252			871,022			2,738	(324,879)
Beginning balance (in shares) at Jun. 30, 2021					89,899,419
Beginning balance at Jun. 30, 2021	585,642				$ 252			866,889			3,225	(284,724)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of ordinary shares (in shares)					1,006
Share-based compensation expense	4,133							4,133
Foreign currency translation adjustment	(487)										(487)
Net loss	(40,155)											(40,155)
Ending balance (in shares) at Sep. 30, 2021				0	89,900,425
Ending balance at Sep. 30, 2021	549,133			$ 0	$ 252			871,022			2,738	(324,879)
Beginning balance (in shares) at Dec. 31, 2021					89,988,228
Beginning balance at Dec. 31, 2021	491,554				$ 252			876,267			688	(385,653)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued (in shares)					3,938,423
Shares issued	$ 37,748				$ 10			37,738
Stock option exercises (in shares)	150,588				150,588
Stock option exercises	$ 688							688
Vesting of ordinary shares (in shares)					494,412
Vesting of ordinary shares	0				$ 1			(1)
Share-based compensation expense	18,348							18,348
Foreign currency translation adjustment	(2,383)										(2,383)
Net loss	(173,034)											(173,034)
Ending balance (in shares) at Sep. 30, 2022					94,571,651
Ending balance at Sep. 30, 2022	372,921				$ 263			933,040			(1,695)	(558,687)
Beginning balance (in shares) at Jun. 30, 2022					94,271,917
Beginning balance at Jun. 30, 2022	420,039				$ 263			925,730			(1,142)	(504,812)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock option exercises (in shares)					72,834
Stock option exercises	283							283
Vesting of ordinary shares (in shares)					226,900
Share-based compensation expense	7,027							7,027
Foreign currency translation adjustment	(553)										(553)
Net loss	(53,875)											(53,875)
Ending balance (in shares) at Sep. 30, 2022					94,571,651
Ending balance at Sep. 30, 2022	$ 372,921				$ 263			$ 933,040			$ (1,695)	$ (558,687)