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Inventories (Details) - GBP (£)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Inventories      
Finished goods £ 2,130,000 £ 1,416,000  
Cost of inventory recognized during the period £ 8,664,000 £ 8,450,000 £ 8,598,000