The former minister warns his party to argue in favour of the EU "much more than we have done", and to avoid “chasing a Ukip vote”.
The PM found out about the demand several days later than George Osborne.
At a time when the Prime Minister is under intense pressure over Europe, the British government is facing a heavy surcharge.
Ukip may have contaminated the eurosceptic brand, but there are other factors at play.
This week, David Cameron will meet fellow European leaders to try and conclude fraught negotiations over EU strategy on energy and climate change.
The government’s stance on immigration is a source of much shame for many MEPs in Europe.
The Chancellor says that a vote on Britain's EU membership would be unwhipped for Conservative backbench MPs.
A trade agreement between the EU and the US currently under secret negotiation will have a profound impact upon our democracy, but it’s been overshadowed by more typical eurosceptic coverage in the media.
Some in Labour are in danger of giving the appearance that they believe Cameron’s MPs will do a better job of finishing him off than they can.
Had the PM refused to promise a referendum, he would likely have been deposed as Conservative leader.