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Deferred tax - Analysis of the deferred tax (Details) - GBP (£)
£ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Analysis of deferred tax      
Deferred tax assets   £ (58,362)  
Deferred tax liabilities £ 35,546 31,337  
Net deferred tax asset 35,546 (27,025) £ (26,550)
US      
Analysis of deferred tax      
Deferred tax assets   (58,362)  
Net deferred tax asset   (58,362) (58,415)
UK      
Analysis of deferred tax      
Deferred tax liabilities 35,546 31,337  
Net deferred tax asset £ 35,546 £ 31,337 £ 31,865