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British entrepreneur Richard Branson takes part in the "Leadership in Science & Innovation - Good for Britain, Good for the World", Keynote Conversation at the Grand Challenges Annual Meeting 2016 in central London on October 26, 2016. US philanthropist Bill Gates urged Britain on Wednesday to step up investment in science and research as it prepares to leave the EU. Virgin founder Richard Branson, also speaking at the event, echoed the call for investment to drive innovation. / AFP / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

British entrepreneur Richard Branson takes part in the "Leadership in Science & Innovation - Good for Britain, Good for the World", Keynote Conversation at the Grand Challenges Annual Meeting 2016 in central London on October 26, 2016.
US philanthropist Bill Gates urged Britain on Wednesday to step up investment in science and research as it prepares to leave the EU. Virgin founder Richard Branson, also speaking at the event, echoed the call for investment to drive innovation. / AFP / JUSTIN TALLIS        (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)