Starmer tells supporters he will fight any leadership contest

Sir Keir Starmer has told supporters this weekend he will stand in any Labour leadership contest that is triggered.

Until now, the prime minster and his allies insisted he would not walk away if one was held but there has been a big question mark over what he would actually do.

However, after Greater Manchester Mayor Andy Burnham said he would seek to enter any potential leadership contest, Sir Keir's position hardened, the BBC understands.

The prime minister, who still believes a leadership contest could plunge the country into chaos, said he had won a massive majority two years ago and a mandate that he was determined to deliver.

With former Health Secretary Wes Streeting and Burnham circling, and scores of Labour MPs having urged the prime minister to quit, there have been weeks of speculation about a possible challenge.

Much of what happens next depends on the outcome of the Makerfield by-election on 18 June, which Burnham must win to be able to stand in a leadership contest.

But the prime minister's resolve to fight means the chances of a full-blown Labour leadership scrap seem to have risen.

As the sitting Labour leader he would automatically be on the ballot that goes to Labour party members.