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Deferred tax - Analysis of the deferred tax (Details) - GBP (£) £ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Disclosure of temporary difference, unused tax losses and unused tax credits
Deferred tax asset	£ (63,974)	£ (142,107)
Deferred tax liabilities	28,559	20,828
Deferred tax liability (asset)	(35,415)	(121,279)	£ (131,096)
US
Disclosure of temporary difference, unused tax losses and unused tax credits
Deferred tax asset	(63,974)	(142,107)
Deferred tax liability (asset)	(63,974)	(142,107)	(145,460)
UK
Disclosure of temporary difference, unused tax losses and unused tax credits
Deferred tax liabilities	28,559	20,828
Deferred tax liability (asset)	£ 28,559	£ 20,828	£ 14,364

X

- Definition

The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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.

+ References

No definition available.

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- Definition

The amount of deferred tax assets net of deferred tax liabilities, when the absolute amount of deferred tax assets is greater than the absolute amount of deferred tax liabilities. [Refer: Deferred tax assets; Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2017-01-01
-Paragraph 81
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- Definition

The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

+ References

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-URIDate 2017-03-09

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