Even if Miliband thinks Clegg is dead in the water he must remember that voters are unimpressed by parties that wallow in petty tribalism.

Within a decade, Britain will hold a referendum on membership of the European Union – and the Yes campaign will find its arguments enfeebled by lack of exercise. Will anyone dare make the pro-EU case?

The Shadow Chancellor and former Business Secretary agree on how coalition policy is failing and what should happen next, while agreeing to disagree on the past.