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Other operating income (Details) - GBP (£)
£ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Other operating income          
Government grants £ 1,214 £ 8,999 £ 8,829 £ 1,989  
R&D tax credit 2,193 687 2,388 328 £ 399
Other     135    
Other operating income £ 3,407 £ 9,686 £ 11,352 £ 2,317 £ 399