Contract liabilities

12 Months Ended

Dec. 31, 2022

Contract liabilities [abstract]

Contract liabilities

22.Contract liabilities

Contract liabilities comprise entirely deferred revenue in respect of the Mallinckrodt, AstraZeneca plc, and Hansoh research collaborations. The current contract liabilities represent the amount of estimated revenue to be reported in the next 12 months related to amounts invoiced to our partners. Current and non-current contract liabilities include future revenue from collaboration recharged expenses, upfront payments, and milestones achieved to December 31, 2022.

	December 31,			December 31,
	2022			2021
	£000s			£000s
Contract liabilities:
Current		8,864			4,247
Non-current		63,485			72,501
Total contract liabilities		72,349			76,748
	Total
	£000s
Contract liabilities:
At January 1, 2021		68,379
Additions during period		20,392
Revenue unwound during period		(12,023	)
At December 31, 2021		76,748
At January 1, 2022		76,748
Additions during period		12,519
Revenue unwound during period		(16,918	)
At December 31, 2022		72,349