Conservative heavyweights have already spoken out about the recommendations to expand Heathrow airport.
Cabinet minister Justine Greening, whose south west London constituency could be affected by any increase in flights, has claimed that expansion is "undeliverable both democratically, politically and legally".
Cabinet Minister Justine Greening writes her constituents will be 'extremely disappointed' by the decision to back Heathrow third runway
Zac Goldsmith, a frontrunner in the race to be the Tory candidate to replace Boris Johnson as mayor next year, has threatened to resign and trigger a by-election if the Government gives the green light to a third runway.
David Cameron has defended the Government's plans to cut a further £12 billion from the welfare bill, saying he was determined to transform Britain into "a higher wage, lower tax, lower welfare society".
Mr Cameron said Britain needed to end the "merry-go-round" where people on low pay paid tax to the Government only for the Government to hand back the money in welfare payments.
"We need to move from a low wage, high tax, high welfare society to a higher wage, lower tax, lower welfare society," the Prime Minister said in a speech in Runcorn in Cheshire.
Mr Cameron's comments come amid speculation ministers are preparing cuts to tax credits in his first all-Conservative Budget next month.
Andy Burnham, the Labour leadership candidate, has said it is "disgraceful" that ministers had yet to outline where the cuts would come.
David Cameron is set to lay out his plans to improve "social mobility" by tackling low wages, cutting tax and slashing the welfare bill.Read the full story ›
Chancellor George Osborne has taken his first Prime Minister's Questions as he stepped in for David Cameron today.Read the full story ›
Britain took another step on the long road to its forthcoming in/out EU referendum today, after European Union (Referendum) Bill had its second reading in Parliament today.
Labour backed the Bill, but the SNP stood up in opposition to it.
ITV News Political Editor Tom Bradby reports:
Ministers should be allowed to campaign for the UK to exit the European Union in an in-out referendum, Boris Johnson has said.
The Mayor of London said it would be "safer and more harmonious" for David Cameron to allow ministers to campaign on the opposing side.
Mr Cameron was criticised yesterday for claiming that he had been "misinterpreted" when he appeared to suggest ministers would be forced to quit if they called for a No vote.
Asked if ministers should be allowed to campaign for "Brexit" and keep their posts, Mr Johnson told LBC's Nick Ferrari: "I don't see why not myself."
He added: "Do you really need to bind everybody in?"
It would be "wrong" to give 16 and 17-year-old's the vote in the EU referendum, Foreign Secretary Philip Hammond has said.
Speaking in the Commons during a debate on the European Union Referendum Bill, Mr Hammond said: "Some will argue that we should extend the franchise further to 16 and 17-year-olds perhaps or even to citizens of other EU countries resident here. We do not agree."
Shadow foreign secretary Hilary Benn confirmed Labour would seek an amendment to the Bill to allow 16 and 17-year-old's to vote.
"It is the same old excuse of an argument against giving people a say and it's completely at odds with the other rights we already give to 16 and 17-year-olds, which include the right to work, pay tax, join the armed forces," Mr Benn said.
Mr Hammond also confirmed that the referendum could be held earlier than planned if renegotiation is completed ahead of schedule.
Prime Minister David Cameron has insisted he was "misinterpreted" over comments which appeared to suggest government minister could be sacked if they want to campaign for Britain to leave the EU.
During a speech at the G7 summit in Germany, he said:
If you want to be part of the government you have to take the view that we are engaged in an exercise of renegotiation to have a referendum and that will lead to a successful outcome.
Everyone in government has signed up to the programme set out in the Conservative manifesto.
A Downing Street spokeswoman said he had been referring only to the need for ministers to observe the rule of collective responsibility during the renegotiation, and had not been speaking about the referendum campaign itself.
She said he would not "get into any hypotheticals" regarding his approach to the referendum, which has been promised by the end of 2017.
After confusion over his statement on how ministers will be expected to behave over the EU referendum and possible renegotiation David Cameron has said his party has 'real unity' over the issues at stake.
Answering a question from ITV News Deputy Political Editor Chris Ship the Prime Minister said "I think the Conservative party is delighted that we've got a renegotiation reform and referendum agenda, there's complete unity about that."
There's real unity behind the renegotiate and referendum strategy, which is right for the country, which is right for the country.
David Davis has said he welcomes the news that the Prime Minister has clarified his comments in which he appeared to say ministers would have to vote with him in the EU referendum.
It' a welcome reinterpretation of his words.
You cannot reasonably stop ministers from voting the way they want to, campaigning the way they want to and speaking the way they want to.
Otherwise that would not be a fair referendum.