Mr Miliband rounds off by refusing to set a target for immigration. He says it's not the right thing to pluck a figure out of the air when he can't guarantee delivery. He wants to be the first prime minister to "under-promise and over-deliver".

Chris Magee, who runs a tourism business, says a crackdown on zero-hours contracts - a Labour policy - would stop him growing his organisation. Mr Miliband replies that it is not right to "base the future of our economy" on people not knowing, from one day to the next, what they'll take home in pay. And he says he couldn't live on one.

Andrew Baxter:

Good to see Ed getting a hard time from a very good audience, Cameron far more impressive tonight.

Scott Malone:

Ed started off a bit shaky but he is starting to look strong on the stage now. It surprises me how he is responding head on. I would put him ahead of David tonight.

Reality Check

Host David Dimbleby referred to the IFS, external comments made about Labour’s plans for benefit spending earlier this week. "Despite being used as examples of 'tough choices', Labour proposals to remove winter fuel payments from higher-rate taxpaying pensioners, and to limit cash increases in child benefit to 1% this year and next would save next to nothing," it said.

The UK is the "low pay capital of Europe", Mr Miliband says, adding that it has to be fixed.

Tim Seaman:

We are watching the Leaders debate and are very surprised that the other leaders were obviously able to hear the previous Leaders answers. This appears to give the later leaders a clear advantage. Why were they not kept in a sound-proof booth? This appears a basic mistake by the BBC.

Reality Check

Ed Miliband says that wages have not been keeping up with bills for the last five years. A graph on thisONS bulletin, externalshows that inflation has been higher than earnings for most, but not quite all, of the last five years.

Mr Miliband is asked whether a vote for Labour is "carte blanche" for the welfare bill to "skyrocket". He states that he believes in a welfare system "with responsibility". He says the housing benefit bill for people in work has risen considerably. He blames that on the economy being built on low pay and on the lack of homes.

Challenged again on coalitions, Mr Miliband says: "If I am prime minister I am going to seek to implement all of my manifesto." He accepts that he is "not guaranteed a majority".

Mr Miliband says he doesn't want to spend all his energy arguing over whether to leave the EU.

"I have to level with you," he says. He doesn't think "the right thing to do" is to spend two years debating the UK's membership of the EU.

James Paterson:

Great debate tonight. I think the format is better than the other debates. The audience is able to speak out strongly and have a real say to the leaders.

"I'm not going to start bartering away my manifesto," says the Labour leader. Like Mr Cameron, he is aiming for an overall majority. On the possibility of going into a dark room with Nick Clegg, he adds: "I don't like the sound of that at all."

Lots of talk about coalitions tonight.

What will party leaders face if no-one wins outright? Try putting together a Parliamentary majority with our coalition builder game.

Ed Miliband says there would not be a Labour government if it meant deals or a coalition with the SNP.

In his strongest rejection of a coalition to date, he says: "We're not going to do a deal with the SNP. If it meant we weren't going to be in government then so be it. I'm not going to sacrifice the unity of the country."

"I think we can balance the books without sacrificing our public services," says Mr Miliband. After Mr Cameron's answers earlier, he says, child tax credits and child benefit are now "on the ballot paper".