Revenue (Details) - GBP (£) £ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	£ 217,613	£ 159,368	£ 115,432
UK
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	98,571	79,938	74,315
North America
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	45,600	25,944	20,906
Europe
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	£ 73,442	£ 53,486	£ 20,211

The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants.

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+ Details