The ballot paper for the 1975 European Referendum Credit: PA/PA WireTony Benn and his daughter Melissa leave a church hall polling station on Portobello Road during the 1975 European Referendum Credit: PA/PA WireBallots are counted during the 1975 European Referendum Credit: PA/PA Wire
David Cameron's EU referendum promise is "not in the national interest" and risks derailing the fragile UK economy, Deputy Prime Minister Nick Clegg warned.