Finance and Other Income - Summary of Finance and Other Income (Details) - GBP (£) £ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Miscellaneous Other Comprehensive Income [Abstract]
Bank interest receivable	£ 10	£ 129	£ 27
Total Finance and other income	£ 10	£ 129	£ 27

The amount of income or expense arising from interest. [Refer: Interest expense; Interest income]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2021-01-01
-Paragraph 23
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_23&doctype=Standard
-URIDate 2021-03-24

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2021-01-01
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard
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Balance Type:	credit
Period Type:	duration