David Cameron tells Marr he's "hopeful" of an EU deal in February and referendum is likely after September
He says he'll stay on as PM - and "do everything necessary to make it work" - if UK votes to leave EU
Shadow justice secretary Lord Falconer urges Labour to "come together" after recent reshuffle
Labour MP Alison McGovern has quit a party policy group over differences with the leadership
Shadow energy secretary Lisa Nandy has urged people not to forget "a big, big change has taken place in Labour - the biggest change in my lifetime".
She said "Jeremy and many members of the cabinet didn't know each other very well" when he was first elected and recent changes at the top of the party were part of the adjustment process.
Former international development minister Sir Alan Duncan has dismissed claims that the prime minister had not properly answered questions over the government's response to recent widespread flooding.
He said Environment Secretary Liz Truss had been "very convincing" in her statement to the Commons yesterday, as had the prime minister today.
You can follow full coverage of this debate and all the action in the Commons and Lords today on BBC Westminster Live
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BBC political reporter tweets:
Labour's Mike Kane says expanding the UK's airport's capacity is a priority for the whole country and accuses David Cameron of "procrastinating". The prime minister said the Environmental Audit Committee had raised questions over Heathrow and "I'm in favour of answering these questions and then taking a decision".
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Channel 4 News presenter tweets:
David Cameron says it "raises serious questions" that Labour has "lost a shadow defence secretary who believes in strong defence". He was referring to Maria Eagle's replacement in the role, Emily Thornberry, who is against Trident nuclear weapons.
In the second of his two questions, Angus Robertson urged the health secretary to seek advice from his Scottish counterpart. Mr Cameron says increased spending on the NHS in England has a knock-on effect in Scotland and Wales through the Barnett formula but he claims Labour in Wales and the SNP in Scotland are not increasing funding at the same rate.
David Cameron appears to be under some pressure on the issue of the government's response to the floods - after Jeremy Corbyn focused his remarks on this topic he was also quizzed about it by one of his own MPs, Seema Kennedy.
The SNP's Angus Robertson asks why junior doctors in Scotland are not planing to strike next week. Mr Cameron says the UK government has taken a different approach and wants a seven day NHS.
Evening Standard political correspondent tweets...
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The Corbyn-Cameron clash may have ended but Stratford-on-Avon MP Nadeem Zahawi sets up Mr Cameron for a stream of Shakespeare-themed reshuffle gags.
The PM says of the Labour reshuffle, it almost went into a Twelfth Night, turned into a Comedy of Errors and looks like it might be Much Ado about Nothing. He ends with Love's labour's Lost.
Dear Jeremy Our party has always been a broad church, and despite my principled differences with you over many issues of defence, foreign policy and national security, I agreed to serve on your front bench because of the mandate you were given, the assurances that honesty and difference were welcomed, and due to the many areas we agreed wholeheartedly on such as fighting the vicious Tory trade union bill - which I was proud to lead our work on - cuts to tax credits and tackling climate change. I was therefore dismayed that two of our most able and experienced colleagues have been sacked for speaking out in the straight talking and honest way that I believe the public expect and want from their representatives - let alone when it comes to matters of national security. I agree entirely with the words Pat McFadden used in denouncing terrorism and the false narrative that the West is to blame, and so I believe the only honourable thing for me to do, when a fellow team member has been singled out for punishment for speaking with honesty and principle on this critical issue, is to leave the front bench. You and your team will continue to enjoy my full support from the back-benches in taking on this uncaring and brutal Tory government - but we need to urgently recognise and re-affirm as a Labour Party that the national security and defence of our country in such a volatile world, is a red line and a matter that should and must transcend party politics, let alone the internal machinations of our own party or personal score-settling. Yours sincerely Stephen Stephen Doughty MP
Another swipe at Labour's reshuffle as Mr Cameron says the Labour leader can come and see him about floods when he has sorted out the problems in his own party. As for Mr Corbyn's fire and rescue idea, he says the emergency services know what to do when there is a flood.
David Cameron's message for the flooded couple mentioned earlier by Jeremy Corbyn is that the government has introduced a flood insurance scheme, Flood Re, a new initiative. Mr Corbyn calls for a cross-party effort to tackle the problem and calls for fire and rescue services to be given a statutory duty to aid flood victims.
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