I asked the Conservative MP John Baron - who has proposed an amendment to the Queen's Speech - whether the Prime Minister has been following his party on the issue of a European referendum.
Mr Baron replied that it shows Mr Cameron has been "listening" to his party.
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.