The Lib Dem Business Secretary Vince Cable has criticised Tory backbenchers' moves for an EU referendum Bill, as "just reopening a Pandora's box which potentially is not only damaging to them as a party, but it is damaging to the country."
Home Secretary Theresa May has told ITV News that she believes there should be a renegotiation of terms with Europe before offering a referendum to the British public after the next General Election.
Cameron has pledged to back a Conservative MP's EU referendum bill, as Cable labelled the move potentially 'damaging' for the country.
114 Conservative backbenchers have voted in favour of a eurosceptic motion to amend the Queen's Speech in defiance of the Prime Minister.
David Cameron has denied he has buckled under pressure from his backbench MPs over the EU debate.