Theresa May and Jeremy Corbyn have clashed over Brexit, as the Labour leader sought to capitalise on cabinet rifts over the role of business in the negotiations.
MPs shouted 'Where's Boris?' when Mr Corbyn mocked the foreign secretary, who infuriated colleagues by reportedly shouting, "F*** business", when asked by diplomats about the plans to handle industry.
It comes as collective responsibility at the top of the government appeared to break down, when a cabinet minister hit out at red tape – including flagship environmental measures pushed by the prime minister and Michael Gove.
Liz Truss, the treasury chief secretary, openly mocked the environment secretary for his plan to ban wood-burning ovens and “macho” ministers.
George Freeman, formerly a member of Ms May’s policy unit, also accused his party’s senior figures on Tuesday of turning the process of leaving the EU into “essentially an alley street-cat fight between rival gangs”.
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'We are in the dark around all of this – we don’t have that go-to coordinator to assist with us'During PMQs, former minister Tim Loughton, raised the Supreme Court ruling on heterosexual couples being able to access civil partnerships. He said "this discrimination needs to be addressed urgently".
Loughton called on the prime minister to give government support to his private members' bill which would "resolve this illegal inequality and extend civil partnerships to everyone".
May responded, saying the Government was "well aware" of its legal obligations, adding: "We'll obviously need to consider the judgment of the Supreme Court with great care but we also recognise the very sensitive and personal issues that are involved in this case and we acknowledge the genuine convictions of the couple involved."
May added that the government had already "committed to undertake a full review of the operation of civil partnerships".

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Conservatives accused of 'turning a blind eye to Islamophobia' after inaction on abuse inquiry
Theresa May said there was 'no place' for anti-Muslim sentiment in society, when challenged during prime minister's questions
Philip Hammond is 'co-operating' with business to undermine Brexit, Jacob-Rees Mogg says
Leading Brexiteer claims recent warnings by business leaders were orchestrated by pro-EU cabinet ministersA major organisation of British Muslims has accused the Conservatives of "turning a blind eye" to Islamophobia within the party.
The Muslim Council of Britain (MCB) wrote to party chairman Brandon Lewis renewing its demand for a wide-ranging inquiry, after receiving no formal response to its call for an investigation last month.
General secretary Harun Khan first wrote to Mr Lewis in May, highlighting a string of incidents by Tory representatives ranging from allegedly offensive tweets to accusations of links to the far-right.
But he said he received "neither an acknowledgement nor a reply" from the party, while fresh allegations of racism continued to emerge from Muslim members.
In his new letter, Mr Khan told Mr Lewis: "Since we last wrote to you, other individuals have shared with us their stories of experiencing Islamophobia.
"They are worried about taking their concerns to your party because it would be 'political suicide' or might endanger their relationship with their local MP.
"This is a sad state of affairs for our democracy and we hope they can be taken up in an independent inquiry."
He said: "No deal is a bad deal, but isn't the truth that the real risk to jobs in our country is a Prime Minister who is having to negotiate round the clock with her own Cabinet to stop it falling apart, rather than negotiating to defend jobs of workers in this country."