Intangible Assets (Details) - GBP (£) £ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	£ 16,029
Ending balance, intangible assets	30,787	£ 16,029
Cost
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	19,559	12,724
Additions	1,827	1,364
On acquisition of subsidiary / business	15,236	4,301
Reclassification		61
Disposals	(13)	(22)
Effect of foreign exchange translations	745	1,131
Ending balance, intangible assets	37,354	19,559
Amortisation
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	(3,530)	(1,493)
Charge for the year	2,912	1,814
Reclassification		(58)
Impairment	(19)
Disposals	13	3
Effect of foreign exchange translations	(119)	(168)
Ending balance, intangible assets	(6,567)	(3,530)
Client relationship
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	14,545
Ending balance, intangible assets	27,776	14,545
Client relationship \| Cost
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	17,603	12,200
Additions	0	0
On acquisition of subsidiary / business	15,214	4,301
Reclassification		0
Disposals	0	0
Effect of foreign exchange translations	745	1,102
Ending balance, intangible assets	33,562	17,603
Client relationship \| Amortisation
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	(3,058)	(1,244)
Charge for the year	2,611	1,668
Reclassification		0
Impairment	0
Disposals	0	0
Effect of foreign exchange translations	(117)	(146)
Ending balance, intangible assets	(5,786)	(3,058)
Software and licences
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	1,422
Ending balance, intangible assets	2,996	1,422
Software and licences \| Cost
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	1,819	391
Additions	1,827	1,364
On acquisition of subsidiary / business	22	0
Reclassification		61
Disposals	(13)	(22)
Effect of foreign exchange translations	3	25
Ending balance, intangible assets	3,658	1,819
Software and licences \| Amortisation
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	(397)	(220)
Charge for the year	257	99
Reclassification		(58)
Impairment	(19)
Disposals	13	3
Effect of foreign exchange translations	(2)	(23)
Ending balance, intangible assets	(662)	(397)
Non-compete agreement
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	62
Ending balance, intangible assets	15	62
Non-compete agreement \| Cost
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	137	133
Additions	0	0
On acquisition of subsidiary / business	0	0
Reclassification		0
Disposals	0	0
Effect of foreign exchange translations	(3)	4
Ending balance, intangible assets	134	137
Non-compete agreement \| Amortisation
Reconciliation of changes in intangible assets other than goodwill [abstract]
Beginning balance, intangible assets	(75)	(29)
Charge for the year	44	47
Reclassification		0
Impairment	0
Disposals	0	0
Effect of foreign exchange translations	0	1
Ending balance, intangible assets	£ (119)	£ (75)

Increase (Decrease) Through Reclassifications, Intangible Assets

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- Definition

The increase in intangible assets other than goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2017-01-01
-Paragraph 118
-Subparagraph e
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_i&doctype=Standard
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The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill]

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The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 38
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_vi&doctype=Standard
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The decrease in intangible assets other than goodwill resulting from disposals. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
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-Paragraph 118
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_ii&doctype=Standard
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The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill]

+ References

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-Name IAS
-Number 38
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The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2017-01-01
-Paragraph 118
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-Clause vii
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-URIDate 2017-03-09

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- Definition

The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2017-01-01
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No definition available.

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