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Trade and other receivables (Details) - GBP (£)
£ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Trade and other receivables [Abstract]    
Trade receivables £ 2,051 £ 1,471
Other receivables 1,722 3,667
Interest receivable 0 28
Prepayments and accrued income 6,507 4,473
Total trade and other receivables £ 10,280 £ 9,639