And now the third commitment for working people - a promise David Cameron says the Tories want to make "not just now, but always". The Conservatives are pledging to go "one step further" on income tax by legislating their change. The basic tax-free allowance will be automatically uprated so that no-one earning the minimum wage will pay income tax. Lots more applause, of course.

Image source, Getty

The second commitment to working people, David Cameron says, is on childcare. For families, he says, it is "the issue they care about". Childcare is being made tax-free; and now 15 hours of universal free childcare is now being doubled to 30 hours. "We are going to take that free childcare and we will double it." There's cheers in Swindon as his audience greets that news. David Cameron smiles to one side as he soaks up the applause.

At 5.30 today Liberal Democrat, Danny Alexander - Chief Secretary to the Treasury - will be live in the studio to take your questions on the party's policies. You can tweet questions to us at #BBCAskThis -- or you can email video questions to Your Pics@bbc.co.uk .

Now David Cameron moves on to the three big policy announcements the Tories are wheeling out today. First comes the right-to-buy story, and the PM is explaining the details of his approach. "That is 1.3 million extra families, a whole generation given the security of a home of their own." More looking into the camera as Cameron declares: "The dream of a home-owning democracy is alive, and we will help you fulfill it."

"We are taking and will continue to take the difficult decisions that are necessary," David Cameron says, but given his positive rhetoric many viewers could be forgiven for thinking there's anything to really worry about in the years ahead. "A manifesto that is right there, foursquare behind working people in this country - only a Conservative government can deliver it." Lots more applause now.

Image source, PA

Patrick O'Flynn, UKIP's economics spokesman, said he did not think the right-to-buy extension would help David Cameron win back UKIP voters. 

By 2018 Britain will be running a surplus, David Cameron says, as he continues his very positive theme. The Tories will back businesses in their work, he says. But it's not about the numbers, he says. It's about living a "good life":

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The big announcement of this manifesto is a promise of 30 hours a week of free childcare for three- and four-year-olds. The Conservatives are doubling the existing provision, saving parents £5,000 a year.

Labour have promised 25 hours a week.

The one word as prime minster that matters to him more than anything else, David Cameron says, is "security". He says the Conservatives will always support the armed forces. And on the threat from Islamic State, he says "the threat is in many ways unprecedented". Mr Cameron says the Tory manifesto deals with that threat head-on. "Yes, we will give our security services the powers they need including keeping up-to-date their ability to access communications data."

David Cameron is visibly passionate as he talks of the "buccaneering, world-beating, can-do country" that he thinks can "do it all again". He then looks directly into the camera and slows down as he says: "Let's not let Labour drag us back to square one." Then comes the jabbing finger as he looks back at the last five years and the doubters. George Osborne, Theresa May and Iain Duncan Smith all said "no, we hold firm", he says. "That's what we've done together."

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David Cameron says the next five years are about "turning the good news in our economy into a good life for you and your family". He talks of the "small island with a massive impact, the bright light in the North Sea that's exceeded expectations decade after decade, century after century. And we are on the brink of being that country once again."

And now here's the Conservative leader, who strides on to the stage to rounds of applause. His first big point, after praising the college in Swindon where he's speaking, is to say that there's a simple proposition at the heart of this manifesto: "We are the party of working people, offering you security at every stage of your life."

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Theresa May rather teasingly builds up to introducing David Cameron - "I know there is no-one... more dedicated to keeping our country safe," she declares - but she leaves us waiting as a video's played highlighting the Liam Byrne "no money left" note.

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