DUP MP Jim Shannon says the deal on offer does not include any meaningful change to the Common Agricultural and Fishers Policies. He says farmers in Northern Ireland are "having to wade through red tape" just to farm. The PM replies by saying there have been major changes to the CAP in recent months. The SDLP's Mark Durkan then asks how changes to child benefit payments will apply to constituencies in Northern Ireland bordering on the Irish Republic. The PM says he will look into clarifying the details. 

Conservative MP Ben Howlett congratulates the PM on his efforts and says the package on offer is a "substantial" change to UK-EU relations. He asks what leaving the EU would mean for our grandchildren. The PM says it is right that the EU debate focuses on issues of everyday importance to students, consumers and families, such as mobile phone roaming charges. 

Labour veteran David Winnick said Mr Cameron had been unable to persuade critics on the Conservative benches "of the virtue of the negotiations" - apart from Home Secretary Theresa May.

Mr Cameron said:

Boris Johnson had to be egged on to ask a question in the EU debate.

It was Labour's Alan Johnson who cheekily suggested that - given that Boris's father Stanley and younger brother Jo (a science minister) - had both come out in favour of Britain's membership it was time he learned the "importance of family solidarity and joined the swelling ranks of Johnsons for Europe".

David Cameron seemed to enjoy that, adding that they still had to persuade Boris's sister Rachel, a newspaper columnist, and hopes of getting whole Johnson clan on board "may have to wait a bit longer".

Speaker John Bercow told the reclining London mayor he would have to stand up if he wanted to ask Mr Cameron a question, something he did not opt to do until a few minutes later.

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Former Labour minister Kate Hoey asked the PM to ensure that other member states to keep out of the EU referendum, arguing that the result should be decided by the British people.

Mr Cameron agreed, saying it was "a decision for the British people and the British people alone" and "they certainly don't want to hear lectures from other people about that".

The SDLP's Dr Alasdair McDonnell said more people in Northern Ireland agreed with Mr Cameron that the UK would be better off in the EU than out.

He reiterated his party's call for the referendum to be postponed -and asked if the UK would take a more positive and engaged role within the EU once the referendum was over.

Mr Cameron said he believed four months was enough time before a poll to be able to get across key arguments for both sides.

He said the EU had been involved in helping to build a strong economy in Northern Ireland.

Former Conservative defence secretary Liam Fox, who is campaigning for Britain to leave the EU, asked if the "emergency brake" on migrant benefits was for Europe to decide, or the UK.

"Is it not clear that we're sovereign in these areas...." he said.

"Isn't ultimately the decision of the referendum on areas of our own laws and our own borders - whether we want them to be determined here by ourselves or overseas by someone else?"

Mr Cameron said the legislation was clear that Britain wants "no more something-for-nothing", that it wants a "welfare brake" and wants to deny benefits to people who have not been here four years.

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Former Labour leadership contender Liz Kendall asked if any of the renegotiations watered down intelligence-sharing, joint investigations or an EU arrest warrant.

"Our membership of the EU helps bring criminals to justice and helps keep Britain safe," she said.

Mr Cameron said there were ways Britain could cooperate with Europe to keep it safe. 

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Former Conservative attorney general Dominic Grieve said the deal secured by Mr Cameron was "quite remarkable" because of the legally binding nature of the document he brings back.

"One of the principle problems that has bedeviled the UK's relationship with the EU has been the capricious interpretation of the treaties sometimes to circumvent what the UK has believed to be its true treaty obligations," he said.

Mr Cameron said if any PM tried to sign up to another treaty to pass powers they couldn't - there would have to be a referendum.

DUP Deputy Leader Nigel Dodds said the UK pays the EU £9bn plus net every year. He asked Mr Cameron how this contribution will be reduced following his negotiations.

The PM replied that the European budget agreement had already been agreed - and this would be lower in the next seven years than over the last seven years.

"The overall financial perspective is coming down and that is good news for Britain," he added.

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London mayor and Conservative MP Boris Johnson asked how changes as a result of the negotiations will restrict the volume of legislation coming from Brussels and assert the authority of the House of Commons.

Mr Cameron said the sovereignty of the House was assured in 2010 through the European Referendum Act but it is "something I'm keen to do even more on, to put beyond doubt that this House of Commons is sovereign".

The PM said for the first time ever there's a commitment that Europe has to examine all its competencies, but also that Brussels has to cut its regulation.

He said welfare, immigration and bail out powers would be coming back to the UK.

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Labour's Gisela Stuart asked if any of the negotiations had increased the security of the continent or the UK.

Mr Cameron said because Britain was not in the Schengen borderless zone, foreign nationals cannot come to the UK. 

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Conservative John Redwood, who is campaigning for the UK to leave the EU, said the only way for Britain to keep control of its borders, tax revenues and welfare systems was to leave.

Mr Cameron said Britain was not in Europe for political union, but for trade.

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Senior Conservative Sir Bill Cash, who wants the UK to leave the EU, said Mr Cameron had stated that the EU package would be legally binding and irreversible. 

But Sir Bill said it as "wholly inappropriate" that the deal will "be stitched up by a political decision by the European Commission and not guaranteed treaty change at the right time".