John McDonnell explains how Jeremy Corbyn became their man to run as the left candidate for Labour leader.

Speaking to Becky Milligan, Mr McDonnell thought they would face "crushing defeat" and it would be too demoralising to run a candidate, but relented under pressure.

He describes the moment in a meeting when they all looked to Jeremy Corbyn as it was his "turn" to which he replied "oh go on then".