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Furious MPs tonight rounded on embattled Jeremy Corbyn at the weekly meeting of the Parliamentary Labour Party .

Tensions erupted as MPs lashed out while the leader sat in stony silence sandwiched between his deputy Tom Watson and Scottish Labour leader Kezia Dugdale.

One MP said he looked “very uncomfortable” between the pair.

The meeting came after Mr Watson warned Labour faces a "high-stakes" battle for its future.

He spoke out over an alleged secret plan for the UK’s biggest Union to affiliate with the pro-Corbyn pressure group Momentum .

Moderate backbencher Ian Austin referred to “our so called leader” and demanded to know why Mr Corbyn was not answering questions, as PLP chairman John Cryer responded.

An MP branded Mr Corbyn’s silence “unbelievable”.

(Image: Getty)

One MP said there had been “total condemnation” of the party chief while another described “an absolute roasting” for the leader.

When Mr Corbyn did tackle a couple of questions, he was heckled, sources said.

An angry exchange blew up between Shadow Foreign Secretary Emily Thornberry and Wes Streeting after she told the backbencher “You need to calm down" as he spoke up.

Mr Streeting hit back: “Don’t tell me to calm down," according to insiders.

Raised voices could be heard outside the committee room, and when the stormy meeting broke up, stunned MPs emerged looking shell-shocked, many with faces white with anger.

A veteran peer, asked if the situation was similar to the turbulence of the 1980s, replied: “No, no - it is much, much worse than that.”

Another MP left the rooming, exhaling: “F***’s sake.”

(Image: Getty)

Mr Corbyn grimaced and left the room alone, walking down the committee room corridor by himself as aides scrambled to explain the angry scenes.

A senior Labour source claimed there had been “a robust and open debate”.

Mr Corbyn suffered another blow as his favoured candidate failed to make the shortlist for the Manchester Gorton by-election, triggered by the death of veteran Labour MP Sir Gerald Kaufman.