Cameron says EU referendum turnout is greatest concern for 'In'

By Kylie MacLellan ISE-SHIMA, Japan (Reuters) - Those fighting for Britain to remain in the European Union are making good progress but getting young people to register and turn out to vote is the 'In' camp's greatest concern, Prime Minister David Cameron said on Wednesday. Cameron, the de facto head of the 'In' campaign, said election turnout was "definitely something that is concerning". "I feel we are making good progress with this argument, particularly about Britain being better off if we s