Capital reserves

12 Months Ended

Dec. 31, 2021

Disclosure Of Reserves Within Equity [Abstract]

26.	Capital reserves

The capital redemption reserve was created in 2012 following the reduction of nominal share capital to 0.1p per share. It is required under Section 733 of the Companies Act 2006, held to maintain the capital of the Company when shares are bought back and subsequently cancelled without court approval.

Due to the size of the deficit on the accumulated losses account, the Company has no distributable reserves.

The share premium account reflects the premium to nominal value paid on issuing shares less costs related to the issue. The merger reserve was created on issuance of shares relating to the acquisition of Silence Therapeutics GmbH.

The share-based payments reserve reflects the cost to issue share-based compensation, primarily employee share options.

	Share Premium account		Merger reserve		Share-based Payment reserve			Capital redemption reserve		Total
	£000s		£000s		£000s			£000s		£000s
At January 1, 2019		133,242		22,248		2,437			5,194		163,121
Shares issued		3,767		-		-			-		3,767
On options in issue during the year		1,141		-		584			-		1,725
On options exercised during the year		-		-		(1,370	)		-		(1,370	)
Movement in the year		4,908		-		(786	)		-		4,122
At December 31, 2019		138,150		22,248		1,651			5,194		167,243
Shares issued		15,396		-		-			-		15,396
On options in issue during the year		-		-		4,395			-		4,395
On options exercised during the year		188		-		(331	)		-		(143	)
Movement in the year		15,584		-		4,064			-		19,648
At December 31, 2020		153,734		22,248		5,715			5,194		186,891
Shares issued		30,138		-		-			-		30,138
On options in issue during the year		-		-		8,632			-		8,632
On options exercised during the year		460		-		(659	)		-		(199	)
Movement in the year		30,598		-		7,973			-		38,571
At December 31, 2021		184,332		22,248		13,688			5,194		225,462