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Trade and other payables - Summary of Trade and Other Payables, Amounts Falling Due After More Than One Year (Detail) - GBP (£) £ in Millions	Jun. 30, 2018	Dec. 31, 2017		Jun. 30, 2017
Trade and other non-current payables [abstract]
Payments due to vendors (earnout agreements)	£ 349.2	£ 450.0		£ 586.8
Liabilities in respect of put option agreements with vendors	211.2	219.5		232.6
Fair value of derivatives	30.4	3.3
Other creditors and accruals	347.0	320.0		300.0
Trade and other payables	£ 937.8	£ 992.8	[1]	£ 1,119.4	[1]
[1] Prior year figures have been restated for the impact of the adoption of IFRS 15: Revenue from Contracts with Customers, as described in note 2.

X

- Definition

The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]

+ References

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- Definition

The amount of non-current trade payables and non-current other payables. [Refer: Other non-current payables; Non-current trade payables]

+ References

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The amount of non-current payables that the entity does not separately disclose in the same statement or note.

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Contingent consideration non-current payable to vendors (earnout agreements).

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Liabilities of put option agreements with vendors, non-current.

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