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Share Capital (Details) - GBP (£) £ / shares in Units, £ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017
Authorised share capital [Abstract] |  |
Number of shares authorised (in shares) | 60,000,000,000 |
Par value per share (in gbp per share) | £ 0.02 | £ 0.02
Share capital, shares authorized, value | £ 1,200 | £ 1,200
Number of shares issued [Abstract] |  |
Number of shares issued and fully paid (in shares) | 49,804,145 | 49,804,145
Share capital | £ 996 | £ 996
Number of shares issued (in shares) | 0 | 0
Class A ordinary shares |  |
Number of shares issued [Abstract] |  |
Number of shares issued and fully paid (in shares) | 4,703,980 | 4,703,980
Share capital | £ 94 | £ 94
Class B ordinary shares |  |
Number of shares issued [Abstract] |  |
Number of shares issued and fully paid (in shares) | 28,822,625 | 28,822,625
Share capital | £ 576 | £ 576
Class C ordinary shares |  |
Number of shares issued [Abstract] |  |
Number of shares issued and fully paid (in shares) | 16,277,540 | 16,277,540
Share capital | £ 326 | £ 326

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- Definition The increase (decrease) in the number of ordinary shares issued. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The nominal value of capital issued. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_e&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The number of shares authorised. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The number of shares issued by the entity, for which full payment has been received. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph a -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_ii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_iii&doctype=Standard -URIDate 2017-03-09 + Details
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