Labour's David Winnick says the government should be "ashamed" of housing benefit changes dubbed the "bedroom tax" and likens them to the poll tax introduced by the Thatcher government. Unsurprisingly, Mr Cameron disagrees.

David Cameron is urged to "shop small and local" by Tory MP Stephen Mosley - that's a reference to Small Business Saturday next month in which people are encouraged to back independent outlets. Mr Cameron agrees and says small firms are the "lifeblood of the economy".

Tweets, external: "Britain is too unequal, and it's to the detriment of everyone. I'm no fan of #PMQs, but good to see both party leaders acknowledge that..."

A question from Nigel Dodds about the devolution of more tax powers to the Northern Ireland Executive. The PM says he agrees but that there must also be changes to the Stormont budget.

The Conservative MP John Baron asks for a one-off payment of £25m to support British nuclear test veterans and their families, the subject of a recent legal case. The PM says he is determined to get a resolution and urges Mr Baron to "bear with him".

A change of subject. Former minister Crispin Blunt says humanists should have the same rights regarding marriage as same sex couples. Mr Cameron says that there will be a consultation on the issue.

Labour's Anas Sarwar claims there are two parties who are re-distributing money from the "poorest to the richest" - a twin dig at the Conservatives and the SNP. Mr Cameron says he is "simply wrong", arguing that child poverty and other benchmarks have improved.

Tweets, external: "Audible groans as Bercow does his weekly lecture on "what the voters expect" #PMQs"

Tweets, external: "Cameron more interested in serving his script writers than defending his record on NHS #pmqs"

We are now onto backbenchers' questions, including contributions from Lib Dem President Tim Farron and Conservative John Glen, whose question on unemployment gives the PM the opportunity to back the government's economic strategy.

Tweets, external: "#PMQs Leaders of the dying duopoly trade pantomime insults and lines. Surely we can do better than this?"

Mr Cameron responds by joking that in a recent poll more people believed in the Loch Ness monster than the Labour leader, adding that the problem for the opposition is that "Mr Miliband exists". On that humorous note, the exchanges come to an end.

Winding up his questions. Mr Miliband says the prime minister "just doesn't get it" and claims that those with lot of money "have a friend" in Mr Cameron.

"The NHS is going backwards on his watch and the British people know it, and we will campaign on it" Mr Miliband says.

The prime minister responds with a stream of statistics for the NHS in England and then citing the missed targets by the NHS in Wales, which is run by Labour.

Tweets, external: "Miliband pitching popular tax rise (72% back mansion tax) against unpopular welfare cut (59% oppose bedroom tax). #PMQs"

Mr Miliband is veering all over the place with his questions. He now moves onto the NHS, arguing that the government is missing its cancer waiting targets.

The prime minister has his rebuttal waiting. Referring to Myleene Klass' criticism of the mansion tax, he says Mr Miliband has had a "pasting from a pop star", to cheers from the Tory benches.