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**ALL ROUND PICTURES FROM SOLARPIX.COM**                                             **WORLDWIDE SYNDICATION RIGHTS**                                                                                  Caption: Famous Formula One drivers Jenson Button and Lewis Hamilton meet the British prime minister David Cameron at number 10 Downing Street, The two McLaren drivers came to Downing Street to help launch the United Nations Decade of Action for Road Safety campaign, which aims to reduce fatal road crashes. London, UK. 11 May 2011.                                                                             This pic: Lewis Hamilton                                                                                            JOB REF: 13316 WMB       DATE: 11_05_2011                                                           **MUST CREDIT SOLARPIX.COM OR DOUBLE FEE WILL BE CHARGED**                                                                      **MUST AGREE FEE BEFORE ONLINE USAGE**                               **CALL US ON: +34 952 811 768 or LOW RATE FROM UK 0844 617 7637**