Tax on Profit on Ordinary Activities - Tax Provision (Details) - GBP (£) £ in Thousands			12 Months Ended
Apr. 01, 2020	Apr. 01, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Applicable tax rate		19.00%	19.00%	19.80%	20.00%
UK corporation tax based on the results for the year ended 30 June 2018 at 19% (2017: 19.75%, 2016: 20%)			£ 1,977	£ 1,664	£ 2,275
Overseas tax			4,048	3,066	2,188
Current Tax			6,025	4,730	4,463
Deferred Tax			(350)	138	(338)
Total tax			£ 5,675	£ 4,868	£ 4,125
Changes in tax rates or tax laws enacted or announced
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Applicable tax rate	17.00%

Current Tax Expense (Income) And Adjustments For Current Tax Of Prior Periods, Domestic

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Current Tax Expense (Income) And Adjustments For Current Tax Of Prior Periods, Foreign

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The applicable income tax rate.

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The amount of current tax expense (income) and adjustments for the current tax of prior periods. [Refer: Current tax expense (income); Adjustments for current tax of prior periods]

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The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax that relate to continuing operations. [Refer: Continuing operations [member]; Current tax expense (income); Deferred tax expense (income)]

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