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Wes Streeting, Labour MP for Ilford North, has criticised the way the shadow cabinet reshuffle was handed: "The sad thing, entirely self-inflicted, is all the headlines are about personalities," he told the BBC. "This isn't the way we should be doing opposition.

"When Jeremy came in the emphasis was on open politics. It was disappointing that over the Christmas period there was aggressive briefing from the top of the party there was going to be a 'revenge reshuffle'. Instead we've had a complete shambles, and it's not the way we should be conducting opposition."

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The three most senior executives at the Environment Agency have begun giving evidence to MPs about the flooding in the north of England and Scotland over Christmas and the New Year. Chief executive Sir James Bevan starts by saying the impact has been "heartbreaking" but the response of the affected communities and of his staff has been "inspiring". He says the UK faces a "big challenge" in dealing with an era of increasingly "extreme weather" and the country should pull together to cope with it. 

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In the first speech on the topic by a secretary of state since David Cameron announced ministers would be able to choose to campaign for an EU exit even if he backed the Uk staying in, Elizabeth Truss seems to signal she would line up behind the PM. 

Addressing the Oxford Farming Conference, she said: 

John Mann is the latest Labour MP to attack former Guardian journalist Seamus Milne, Jeremy Corbyn's director of communications who has been accused of briefing against members of the shadow cabinet.

David Cameron and Jeremy Corbyn clashed over the government's record on flood defences during Prime Minister's Questions. Here's a flavour of the exchanges.

The GMB union, which supports the renewal of Trident, has congratulated Emily Thornberry on her appointment as Labour's new shadow defence secretary. Ms Thornberry, who is opposed to the renewal of the nuclear deterrent, replaced Maria Eagle in the party's reshuffle yesterday. In a statement, the GMB's general secretary elect, Tim Roache, said he looked forward to working with Ms Thornberry to protect jobs in the defence industries.  

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Labour MP John Woodcock said of the shadow cabinet changes: "I'm losing hope that they will orient themselves towards being a credible force." 

He characterised shadow chancellor John McDonnell's claim that ministers who have resigned are to the right of most in the party as "deeply insulting".

Responding to reports North Korea has tested a hydrogen bomb, the foreign secretary said: "This is clearly illegal. It contravenes North Korea's international obligations. 

"It will be condemned roundly by all countries in the international community and I expect that there will be a UN Security Council meeting later today to formalise that condemnation."

BBC political editor Laura Kuenssberg discusses the future of Labour’s pro-Trident policy with Andrew Neil on Wednesday’s Daily Politics, after the party changed its shadow defence secretary in the reshuffle.

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Defence Secretary Michael Fallon has said the divisions within the Labour Party show the opposition would be a "threat to national security". 

He said reports that North Korea had detonated a hydrogen bomb gave further reason not to hand power to the Labour Party which he claimed would "disarm Britain".

Speaking to Newsweek, external, Lord Mandelson said: 

Mayorwatch.co.uk blogger Martin Hoscik has posted this blast from the past, taken during Ken Livingstone's 2008 mayoral campaign. 

From left to right we have Mr Livingstone, the late Tony Benn, Labour London Assembly Member Jennette Arnold, Mr Corbyn and the new shadow defence secretary, Emily Thornberry. 

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Junior minister Cat Smith has defended Jeremy Corbyn's reshuffle, saying the labour leader "needs people around him he can trust".

The shadow women and equalities minister  said those who wanted to criticise the leadership could do so "from the backbenches".

"We're in the business of getting ourselves into government in 2020 and it's important Jeremy has people around him he can trust," she added.

Cat Smith worked in Jeremy Corbyn's office until her election in 2015.

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TV watchdog Ofcom has received 165 complaints about comments made by Winston McKenzie on the launch show for Celebrity Big Brother.

In his entry video, the ex-UKIP and Veritas Westminster candidate - and the English Democrats' London mayoral candidate - said he would "cope with a homosexual in the house" by "standing against a brick wall all the time".

The former boxer was booed by the live crowd as he entered the house.

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UKIP is having its say on Labour's reshuffle, claiming Emily Thornberry's appointment as shadow defence secretary has left the official opposition without any credibility. The party's defence spokesman, Mike Hookem, says Jeremy Corbyn is less concerned with ensuring the UK is properly protected than "sacking those who disagree with his crackpot defence policies and who blame western intervention for terrorism, simply to replace them with his socialist cronies". He adds:

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Labour's deputy leader Tom Watson has denied claims by a fellow Labour MP, Kevan Jones, that he thought the appointment of Emily Thornberry as shadow defence secretary was a mistake. He has set the record straight on Twitter.

Several journalists have picked up on what Downing Street has been saying in its post-PMQs briefing about why a flood defence scheme for the River Aire in Leeds - which Jeremy Corbyn raised during the session - did not get the go ahead in 2010.