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Taxation (Details) - GBP (£)
1 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Taxation        
Accounting profit £ 50,000 £ (245,224,000) £ (12,322,000) £ (7,514,000)
Unused potential tax losses for which no deferred tax asset is recognized   250,500,000 £ 4,641,000  
Deferred tax assets or liabilities recognized   £ 0