Revenue (Tables)

3 Months Ended

Mar. 31, 2020

Revenue

Summary of revenue categories

	Three months ended		Three months ended
	March 31,		March 31,
	2020		2019
Development revenue: GSK Collaboration and License Agreement	$	761	$	—
	$	761	$	—

Schedule of movements in deferred revenue

	Deferred revenue
Deferred revenue at January 1, 2020	$	2,128
Amounts invoiced in the period		50,000
Revenue in the period		(761)
Foreign exchange arising on consolidation(1)		(2,735)
Deferred revenue at March 31, 2020	$	48,632