BBC Politics Live – 14th May 2015  ( link for BBC Politics Live –  http://www.bbc.co.uk/news/live/uk-politics-32726181)

Former UKIP deputy leader David Campbell Bannerman – now a Conservative MEP – tells the BBC News Channel that his former party has “outgrown” its leader. He says Nigel Farage should step down to focus on campaigning during the In/Out referendum on membership of the European Union promised by the PM. “Nigel Farage should work on the referendum and not be fighting this great battle within the United Kingdom Independence Party,” he says.  Suggesting that Conservatives’ referendum pledge won votes from UKIP’s right-leaning supporters, Mr Bannerman adds: “UKIP will have to go left if it’s to stay in existence.”