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Leases (Tables)

12 Months Ended

Dec. 31, 2020

Presentation Of Leases For Lessee [Abstract]

Summary of Carrying Amounts of Lease Liabilities

The carrying amounts of lease liabilities and the movements during the period are as follows:

	2020			2019
	(in thousands)
	£			£
At January 1		806			434
Additions		—			548
Re-measurement of liability		115			2
Accretion of interest		26			21
Payments		(297	)		(197	)
Effect of foreign currency exchange differences		(5	)		(2	)
At December 31		645			806

Classified as:
Current		278			268
Non-current		367			538
		645			806

Summary of Maturity Analysis of Lease Liabilities

The maturity analysis of lease liabilities is as follows:

	2020			2019
	(in thousands)
	£			£
Contractual undiscounted payments
Not later than 1 year		296			293
Later than 1 year and not later than 3 years		307			400
Later than 3 years and not later than 5 years		74			167
Total contractual undiscounted payments		677			860
Less: effect of discounting		(32	)		(54	)
Discounted lease liabilities		645			806

Summary of Amounts Recognized in Statements of Operations With Respect to Lease Contracts

The following are the amounts recognized in the statements of operations with respect to lease contracts:

	2020		2019		2018
	(in thousands)
	£		£		£
Depreciation expense of right of use assets under IFRS 16		268		193		—
Interest expense on lease liabilities (included in administrative expenses) under IFRS 16		26		21		—
Operating lease expense under IAS 17		—		—		150
Total amount recognized in statements of operations		294		214		150

Summary of Maturity Analysis of Lease Liabilities Extension Options Not Expected to be Exercised

Based upon the current lease cost, the undiscounted future rental payments of potential extension options that are not included in the lease liability are as follows:

	2020		2019
	(in thousands)
	£		£
Extension options not expected to be exercised
Not later than 5 years		591		351
Later than 5 years		387		627
Total		978		978