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Going concern and risk management policies - Additional Information (Detail) £ in Millions	Jun. 30, 2018 GBP (£)
Disclosure of nature and extent of risks arising from financial instruments [abstract]
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- References

No definition available.

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2017-01-01
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