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Trade and other payables (Tables) | 6 Months Ended
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Jun. 30, 2018
Within one year [member] |
Summary of Trade and Other Payables |
| 30 June 2018 |  |  | 30 June 2017 |  |  | 31 December 2017 |
|  | £m |  |  | £m |  |  | £m |
Trade payables |  |  | 9,611.7 |  |  |  | 9,087.5 |  |  |  | 9,893.0 |
Deferred income |  |  | 1,284.5 |  |  |  | 1,188.3 |  |  |  | 1,212.1 |
Payments due to vendors (earnout agreements) |  |  | 193.7 |  |  |  | 283.9 |  |  |  | 180.7 |
Liabilities in respect of put option agreements with vendors |  |  | 50.0 |  |  |  | 36.7 |  |  |  | 38.6 |
Fair value of derivatives |  |  | 2.2 |  |  |  | 2.8 |  |  |  | 3.5 |
Other creditors and accruals |  |  | 2,874.5 |  |  |  | 2,829.0 |  |  |  | 2,913.2 |
|  |  | 14,016.6 |  |  |  | 13,428.2 |  |  |  | 14,241.1 |
Greater than 1 year [member] |
Summary of Trade and Other Payables |
|  | 30 June 2018 |  |  | 30 June 2017 |  |  | 31 December 2017 |
|  | £m |  |  | £m |  |  | £m |
Payments due to vendors (earnout agreements) |  |  | 349.2 |  |  |  | 586.8 |  |  |  | 450.0 |
Liabilities in respect of put option agreements with vendors |  |  | 211.2 |  |  |  | 232.6 |  |  |  | 219.5 |
Fair value of derivatives |  |  | 30.4 |  |  |  | — |  |  |  | 3.3 |
Other creditors and accruals |  |  | 347.0 |  |  |  | 300.0 |  |  |  | 320.0 |
|  |  | 937.8 |  |  |  | 1,119.4 |  |  |  | 992.8 |
Trade and Other Payable [member] |
Maturity Analysis for Non-derivative Financial Liabilities | The following table sets out payments due to vendors, comprising contingent consideration and the directors’ best estimates of future earnout-related obligations:
|  | 30 June 2018 |  |  | 30 June 2017 |  |  | 31 December 2017 |
|  | £m |  |  | £m |  |  | £m |
Within one year |  |  | 193.7 |  |  |  | 283.9 |  |  |  | 180.7 |
Between 1 and 2 years |  |  | 131.4 |  |  |  | 163.0 |  |  |  | 128.3 |
Between 2 and 3 years |  |  | 96.5 |  |  |  | 167.0 |  |  |  | 144.1 |
Between 3 and 4 years |  |  | 61.3 |  |  |  | 148.5 |  |  |  | 58.3 |
Between 4 and 5 years |  |  | 49.9 |  |  |  | 83.5 |  |  |  | 103.1 |
Over 5 years |  |  | 10.1 |  |  |  | 24.8 |  |  |  | 16.2 |
|  |  | 542.9 |  |  |  | 870.7 |  |  |  | 630.7 |
Summary of Contingent Consideration | The following table sets out the movements in contingent consideration during the period:
|  | Six months ended 30 June 2018 |  |  | Six months ended 30 June 2017 |  |  | Year ended 31 December 2017 |
|  | £m |  |  | £m |  |  | £m |
At the beginning of the period |  |  | 630.7 |  |  |  | 976.5 |  |  |  | 976.5 |
Earnouts paid |  |  | (38.0 | ) |  |  | (61.7 | ) |  |  | (199.1 | )
New acquisitions |  |  | 11.9 |  |  |  | 71.4 |  |  |  | 163.7 |
Revision of estimates taken to goodwill |  |  | (26.3 | ) |  |  | (23.2 | ) |  |  | (60.7 | )
Revaluation of payments due to vendors (note 7) |  |  | (29.7 | ) |  |  | (69.4 | ) |  |  | (208.6 | )
Exchange adjustments |  |  | (5.7 | ) |  |  | (22.9 | ) |  |  | (41.1 | )
At the end of the period |  |  | 542.9 |  |  |  | 870.7 |  |  |  | 630.7 |

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