The Conservative MP John Baron has told ITV News that the Prime Minister's solution of publishing a draft Bill on an EU referendum is "second best", but showed he had been listening to - not following - his party.
Speaking to our Deputy Political Editor Chris Ship, he commended Mr Cameron for "listening" to his party, but urged him to "seize this moment" by passing an amendment to the Queen's Speech that includes a mention of the referendum.
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.