British Prime Minister David Cameron has called for Labour leader Jeremy Corbyn to stand down in the national interest saying: "For heaven's sake man, go."
Pressure on Corbyn to resign has continued to intensify as he faced fresh resignations from the front bench - including one MP appointed to the shadow cabinet just two days ago.
During Prime Minister's Questions on Wednesday, Cameron waded into Labour's misery, criticising Corbyn's role in the EU referendum campaign.
"It might be in my party's interest for him to sit there, it's not in the national interest and I would say, for heaven's sake man, go," he said.
Corbyn's arrival in the Commons chamber was met by stony silence from his backbenchers.
As he took to the Despatch Box, many Labour MPs sat with their arms crossed.
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The Labour leader used PMQs to challenge Cameron over "disgraceful" levels of child poverty and said the referendum result had been a rejection of the status quo.
Cameron hit back: "Of course we need to do more to tackle poverty, we need to do more to spread wealth and opportunity, but to try and pretend that last Thursday's vote was a result of the state of the British economy is complete nonsense.
"We all have to reflect on our role in the referendum campaign," he added. "I know he says he put his back into it. All I would say is I would hate to see him when he is not trying."
Former acting Labour leaders Harriet Harman and Margaret Beckett have called on Corbyn to fall on his sword.
Labour MP Pat Glass announced she was quitting the education brief she was given after the mass frontbench walkout, saying the situation was "untenable".
Momentum, the grassroots movement that mobilises in support of Corbyn, said it was postponing a rally planned for Wednesday night "due to overwhelming demand".
The Labour leader had been due to address the event, with Public and Commercial Services union chief Mark Serwotka and Fire Brigades Union general secretary Matt Wrack also speaking in support of him.
Shadow chancellor John McDonnell called on the party's MPs to "play by the rules".
"It looks as though we will have a leadership election," he told Sky News
"All we are saying to Labour MPs is, play by the rules of our party and, if there is to be a democratic election, respect the decisions of our members."
Harman said Corbyn had "no right or mandate" to stay in office.
Former party leader Ed Miliband also called on Corbyn to quit, saying his position is "untenable".
Miliband said he had supported Corbyn "all the way along" but urged him to now reflect on what is "the right thing for the country".
Britain is facing its worst crisis since World War II, Miliband said.
He told BBC Radio 4's The World At One program: "I have reluctantly reached the conclusion that his position is untenable."
