Jeremy Corbyn is wrestling with arguably the most difficult decision faced by a Labour leader since Tony Blair opted for war with Iraq. Until now, we’ve all sat back to watch the Tories rip themselves apart over Brexit. Now it’s our turn.

Thus far Labour has largely escaped the internecine conflict raging on the Conservative benches. On our side it’s stayed on a more civilised footing.

Colleagues who disagree tend not to raise the toughest issues with each other, or we mention it briefly then back away, but there’s increasingly been no escaping the elephant in the room: do you support or oppose a second referendum?

Feelings run deep and everyone’s already taken their stand. They’ve made their decision, they’re sticking to it and for