Jeremy Corbyn has pledged that Labour will back a second referendum on any Brexit deal put to parliament, but warned of a “deliberately inflamed divide” as he sought to calm tempers among senior party figures.

The Labour leader, who is visiting Dublin to meet Irish taoiseach Leo Varadkar on Thursday, said his party would “do whatever is necessary to stop a disastrous no-deal outcome” and said Labour would work across party lines to block a new Brexiter prime minister who could crash the UK out of the EU.