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Condensed consolidating financial information for bonds issued by WPP Finance 2010 with WPP plc as parent guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as subsidiary guarantors - Condensed Consolidating Income Statement Information (Detail) - GBP (£) £ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018 | Dec. 31, 2018
Condensed Consolidating Income Statement Information [line items] |  |  |  |
Revenue | £ 7,616.0 |  | £ 7,492.7 | £ 15,602.4
Costs of services | (6,390.2) |  | (6,218.7) | (12,663.5)
Gross profit | 1,225.8 |  | 1,274.0 | 2,938.9
General and administrative costs | (552.8) |  | (432.1) | (1,507.5)
Operating profit/(loss) | 673.0 |  | 841.9 | 1,431.4
Share of results of associates | 8.0 |  | 9.4 | 43.5
Profit before interest and taxation | 681.0 |  | 851.3 | 1,474.9
Finance and investment income | 43.6 |  | 48.3 | 104.8
Finance costs | (189.2) |  | (134.2) | (289.3)
Revaluation of financial instruments | (57.2) |  | 81.1 | 172.9
Profit/(loss) before taxation | 478.2 |  | 846.5 | 1,463.3
Taxation | (128.8) |  | (141.0) | (323.9)
Profit/(loss) for the period | 349.4 | £ 433.9 | 705.5 | 1,139.4
Attributable to: |  |  |  |
Equity holders of the parent | 312.4 |  | 672.4 | 1,062.9
Non-controlling interests | 37.0 |  | 33.1 | 76.5
Profit/(loss) for the year | 349.4 | £ 433.9 | 705.5 | 1,139.4
Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member] |  |  |  |
Condensed Consolidating Income Statement Information [line items] |  |  |  |
Revenue | 7,616.0 |  | 7,492.7 | 15,602.4
Costs of services | (6,390.2) |  | (6,218.7) | (12,663.5)
Gross profit | 1,225.8 |  | 1,274.0 | 2,938.9
General and administrative costs | (552.8) |  | (432.1) | (1,507.5)
Operating profit/(loss) | 673.0 |  | 841.9 | 1,431.4
Share of results of associates | 8.0 |  | 9.4 | 43.5
Profit before interest and taxation | 681.0 |  | 851.3 | 1,474.9
Finance and investment income | 43.6 |  | 48.3 | 104.8
Finance costs | (189.2) |  | (134.2) | (289.3)
Revaluation of financial instruments | (57.2) |  | 81.1 | 172.9
Profit/(loss) before taxation | 478.2 |  | 846.5 | 1,463.3
Taxation | (128.8) |  | (141.0) | (323.9)
Profit/(loss) for the period | 349.4 |  | 705.5 | 1,139.4
Attributable to: |  |  |  |
Equity holders of the parent | 312.4 |  | 672.4 | 1,062.9
Non-controlling interests | 37.0 |  | 33.1 | 76.5
Profit/(loss) for the year | 349.4 |  | 705.5 | 1,139.4
WPP plc [member] | Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member] |  |  |  |
Condensed Consolidating Income Statement Information [line items] |  |  |  |
General and administrative costs | (8.2) |  | 5.9 | 10.8
Operating profit/(loss) | (8.2) |  | 5.9 | 10.8
Share of results of subsidiaries | 388.9 |  | 724.6 | 1,179.2
Profit before interest and taxation | 380.7 |  | 730.5 | 1,190.0
Finance costs | (68.3) |  | (58.4) | (127.1)
Revaluation of financial instruments |  |  | 0.3 |
Profit/(loss) before taxation | 312.4 |  | 672.4 | 1,062.9
Profit/(loss) for the period | 312.4 |  | 672.4 | 1,062.9
Attributable to: |  |  |  |
Equity holders of the parent | 312.4 |  | 672.4 | 1,062.9
Profit/(loss) for the year | 312.4 |  | 672.4 | 1,062.9
Subsidiary Guarantors [member] | Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member] |  |  |  |
Condensed Consolidating Income Statement Information [line items] |  |  |  |
General and administrative costs | (79.6) |  | (128.7) | (305.8)
Operating profit/(loss) | (79.6) |  | (128.7) | (305.8)
Share of results of subsidiaries | 597.4 |  | 957.6 | 1,710.2
Profit before interest and taxation | 517.8 |  | 828.9 | 1,404.4
Finance and investment income | 11.8 |  | 12.5 | 27.8
Finance costs | (139.3) |  | (116.2) | (248.9)
Profit/(loss) before taxation | 390.3 |  | 725.2 | 1,183.3
Taxation | (1.4) |  | (0.6) | (4.1)
Profit/(loss) for the period | 388.9 |  | 724.6 | 1,179.2
Attributable to: |  |  |  |
Equity holders of the parent | 388.9 |  | 724.6 | 1,179.2
Profit/(loss) for the year | 388.9 |  | 724.6 | 1,179.2
WPP Finance 2010 [member] | Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member] |  |  |  |
Condensed Consolidating Income Statement Information [line items] |  |  |  |
Finance and investment income | 49.8 |  | 50.8 | 102.3
Finance costs | (57.3) |  | (48.9) | (103.1)
Revaluation of financial instruments | 0.2 |  | (13.6) | (1.1)
Profit/(loss) before taxation | (7.3) |  | (11.7) | (1.9)
Profit/(loss) for the period | (7.3) |  | (11.7) | (1.9)
Attributable to: |  |  |  |
Equity holders of the parent | (7.3) |  | (11.7) | (1.9)
Profit/(loss) for the year | (7.3) |  | (11.7) | (1.9)
Other Subsidiaries [member] | Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member] |  |  |  |
Condensed Consolidating Income Statement Information [line items] |  |  |  |
Revenue | 7,616.0 |  | 7,492.7 | 15,602.4
Costs of services | (6,390.2) |  | (6,218.7) | (12,663.5)
Gross profit | 1,225.8 |  | 1,274.0 | 2,938.9
General and administrative costs | (465.0) |  | (309.3) | (1,212.5)
Operating profit/(loss) | 760.8 |  | 964.7 | 1,726.4
Share of results of associates | 8.0 |  | 9.4 | 43.5
Profit before interest and taxation | 768.8 |  | 974.1 | 1,769.9
Finance and investment income | 167.2 |  | 138.5 | 300.6
Finance costs | (109.5) |  | (64.2) | (136.1)
Revaluation of financial instruments | (57.4) |  | 94.4 | 174.0
Profit/(loss) before taxation | 769.1 |  | 1,142.8 | 2,108.4
Taxation | (127.4) |  | (140.4) | (319.8)
Profit/(loss) for the period | 641.7 |  | 1,002.4 | 1,788.6
Attributable to: |  |  |  |
Equity holders of the parent | 604.7 |  | 969.3 | 1,712.1
Non-controlling interests | 37.0 |  | 33.1 | 76.5
Profit/(loss) for the year | 641.7 |  | 1,002.4 | 1,788.6
Reclassifications/Eliminations [member] | Condensed Consolidating Financial Information for Bonds Issued by WPP Finance 2010 with WPP plc as Parent Guarantor and WPP Air 1, WPP 2008 Limited, WPP 2005 Limited, WPP 2012 Limited, and WPP Jubilee Limited as Subsidiary Guarantors [member] |  |  |  |
Condensed Consolidating Income Statement Information [line items] |  |  |  |
Share of results of subsidiaries | (986.3) |  | (1,682.2) | (2,889.4)
Profit before interest and taxation | (986.3) |  | (1,682.2) | (2,889.4)
Finance and investment income | (185.2) |  | (153.5) | (325.9)
Finance costs | 185.2 |  | 153.5 | 325.9
Profit/(loss) before taxation | (986.3) |  | (1,682.2) | (2,889.4)
Profit/(loss) for the period | (986.3) |  | (1,682.2) | (2,889.4)
Attributable to: |  |  |  |
Equity holders of the parent | (986.3) |  | (1,682.2) | (2,889.4)
Profit/(loss) for the year | £ (986.3) |  | £ (1,682.2) | £ (2,889.4)

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