Ed Miliband has called on David Cameron to ban MPs from having second jobs "to restore the reputation of this house" following recent allegations against two former foreign secretaries.
Mr Miliband accused the Prime Minister of not wanting to change the rules after the Government amended a Labour motion that MPs should only have one job.
The Labour leader recalled comments by Mr Cameron in 2009 when he said in opposition that "being a Member of Parliament must be a full-time commitment" and that "double-jobbing MPs" would not be allowed under his leadership.
Mr Cameron said Mr Miliband's proposal was "not thought through", adding: "I think the difficulty with your specific proposal is it would allow, for instance, someone to be a paid trade union official but it wouldn't allow someone to run a family business or a family shop."
Miliband hit back, saying: "Let's agree now we will rule out anyone being a paid trade union official, a paid director, or a paid consultant. Say yes and we can restore the reputation of this House."
ITV News Political Editor Tom Bradby said Mr Miliband's performance at Prime Minister's Questions was one of his "best" for a while.
The PMQ's live feed has now finished
Rosianna Halse Rojas, or @papertimelady as she's better known to her online community, has spoken of her "frustration" over David Cameron's pensioner pledges.
Speaking exclusively to ITV News, she said the Prime Minister seemed to only be focusing on one demographic and should do more for young people.
Labour has challenged David Cameron to confirm that he will attend the TV leaders debates.
In a letter to Grant Shapps after the dates were confirmed Douglas Alexander confirmed Labour leader Ed Miliband will take part.
- Read more: Broadcasters announce leaders debates dates
You will now be aware that broadcasters have today decided – after the drawing of lots – that the head-to-head leaders’ debate between Mr Cameron and Mr Miliband will take place on April 30, just seven days before the General Election.
I am happy to confirm on Mr Miliband’s behalf that he will turn up to debate Mr Cameron on 30th April.
Can you today confirm that Mr Cameron will be there too?
Failure to answer this question will lead many to conclude that you and Mr Cameron are reluctant to give the British people the chance to make up their own minds.
The broadcasters have set the date. The invitation is in the post. The only question remaining is whether David Cameron is willing to go head-to-head with Ed Miliband.
A Conservative government after the general election would abolish means tested pensions leaving people with a flat rate "if they paid in", David Cameron has announced.
The Prime Minister said: "From April 2016 we're bringing in a single tier pension. This will effectively abolish means testing the pensions of people who've contributed all their lives. We're effectively saying 'whoever you are providing you've put into the system, you will get out'.
"You'll get a decent single tier pension."
Labour leader asks David Cameron to ban MPs from holding paid directorships and consultancies and suggests an earnings cap for MPs.Read the full story ›
Labour has previously said it would strip winter fuel payments from the richest 5% of pensioners and the Liberal Democrats would means-test the benefits.
However the Prime Minister will say it is "wrong" to call the perks a luxury:
Say that to the older woman who can keep warm tonight on this cold February evening, because she's been given the money to heat her home.
Or the widower heading into town on the bus, doing his shopping, seeing people for the only time that week. Or the bedbound lady whose whole day is brightened by the TV, or the sick man whose pain is kept at bay.
Comfort, independence, companionship, health - these aren't luxuries; they're what people who have worked and saved all their lives deserve. And think what we would give up if we did take them away - the principle that if you've done the right thing, you will get the benefits of living in Britain.
In an attempt to woo the 'grey vote,' pensioner benefits will continue to be protected if the Conservatives win the general election, David Cameron will pledge today.
In a repeat of the promise the Prime Minister made ahead of the 2010 poll the following will be shielded from cuts:
- Universal winter fuel payments
- Free bus passes
- Television licences
Mr Cameron has faced pressure from within the Conservatives to abandon the policy, which has seen wealthy pensioners benefiting while millions of other welfare recipients have faced dramatic reductions in state help.
David Cameron has spoken of his concern for three British schoolgirls who are thought to be travelling to Syria.
"It is deeply concerning and obviously our authorities will do everything we can to help these girls," Mr Cameron said.
"But it does make a broader point which is the fight against Islamist extremist terror is not just one that we can wage by the police and border control.
"It needs every school, every university, every college, every community to recognise they have a role to play.
"We all have a role to play in stopping people from having their minds poisoned by this appalling death cult."
The Prime Minister has warned Vladimir Putin there will be "more consequences" and further sanctions for Russia if the ceasefire in Ukraine does not hold.
He rejected the assessment of a parliamentary committee that the UK found itself "sleep-walking" into the crisis over Ukraine, insisting the blame for the situation lay "squarely" with Russia and its president Mr Putin.
The responsibility for what has happened in Ukraine lies absolutely squarely with Vladimir Putin and Russia.
They destabilised and effectively invaded this country and have caused all the problems that have happened since.
What we need to do now is to deliver the strongest possible message to Putin and to Russia that what has happened is unacceptable, that the ceasefires need to hold and if they don't there will be more consequences, more sanctions, more measures.
The truth here is that we have to be clear that we're prepared to do this for the long term and that Russia should not make the mistake of thinking in any way that America, Britain, France or Germany will be divided or will be weak. We won't. We'll be staunch, we'll be strong, we'll be resolute and in the end, we'll prevail.