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v3.20.1

Trade and other payables - Payments Due to Vendors (Detail) - GBP (£) £ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Current | £ 142.4 | £ 148.2 |
Payments due to vendors, Non-current | 111.4 | 266.5 |
Payments due to vendors | 253.8 | 414.7 | £ 630.7
Within one year [member] |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Current | 142.4 | 148.2 |
Between one and two years [member] |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Non-current | 36.9 | 140.2 |
Between two and three years [member] |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Non-current | 37.5 | 38.5 |
Between three and four years [member] |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Non-current | 14.8 | 50.3 |
Between four and five years [member] |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Non-current | 9.7 | 20.4 |
Over five years [member] |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [Line items] |  |  |
Payments due to vendors, Non-current | £ 12.5 | £ 17.1 |

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