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Financial Assets at Amortized Cost - Summary of Financial Assets at Amortized Cost (Details) - GBP (£)
£ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure of Financial Assets [Line Items]    
Financial assets at amortized cost £ 301 £ 303
Total financial assets at amortized cost £ 301 10,303
Term Deposit    
Disclosure of Financial Assets [Line Items]    
Financial assets at amortized cost   £ 10,000