Mr Osborne, who the PM introduced simply introduced as "George", is running through the government's pensions shake-up, and reminding his audience about increases in the state pension during the last parliament.

Again, the complexities of coalition politics. Pensions Minister Steve Webb was blowing the Liberal Democrat trumpet over the same policy earlier.

Carole Walker
Political correspondent

Chancellor George Osborne is on stage now, squinting into the spring sunlight - do none of the Conservative campaign team know how to work the blinds?

It's Labour that Mr Cameron really has his sights on, however. He argues that the election involves a simple choice between tax rises under Labour, or cuts if his party's in power.

Labour, the PM says, will take more of your money and spend it on someone else.

“In their eyes the government knows better than hard-working taxpayers," he adds.

Mr Cameron says 26 million people are getting a tax cut, with three million of the poorest paid being taken out of tax altogether “all thanks to the Conservatives”. That’s more or less exactly what Nick Clegg said when claiming the credit for the Lib Dems earlier. (See 14:59)

And here is the PM arriving at the science park - he's speaking now - you can see it by clicking on the "live coverage" tab above.

David Cameron is speaking at Bristol and Bath Science Park, where's he joined by Chancellor George Osborne. Nick Clegg's also in the West Country. Having accused the Conservatives of pinching Lib Dem income tax policies, we wonder if the Deputy PM thinks Mr Cameron is trying to muscle in on his pitch.

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UKIP leader Nigel Farage brushes off the results of a ComRes poll which put him behind the Conservatives in South Thanet. Commissioned by UKIP donor Aaron Banks, it put the Conservatives on 30 points, UKIP on 29 and Labour on 28.

Image source, PA

Mr Farage insists that "raw data" from the poll put UKIP five points ahead, adding: "It's only after a variety of re-weightings that we're back to a sort of three-way split."

Where better to spend a bank holiday Monday than aboard a bus full of Conservative party activists?

Our correspondent Gavin Hewitt, travelling to England's South West with David Cameron, says the party's boasts about increased income tax allowances - and Labour's counter-claims about the effect of VAT rises and benefit changes - form the core arguments in the campaign.

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A fair few commentators are wondering where Ed Miliband has got to over the Easter break. Toby Young tweets, external that the Labour leader hasn't been seen for 48 hours. "Holed up with his $15,000-a-day American debate coach?" he wonders.

Meanwhile, Spectator contributing editor Harry Cole tweets, external: "

Image source, Twitter

If he's not boning up ahead of the 16 April debate with Plaid Cymru's Leanne Wood, the SNP's Nicola Sturgeon, Natalie Bennett, of the Greens, and UKIP's Nigel Farage, perhaps the Labour leader is dashing to his nearest city farm to have his photo taken with a lamb?

More on that switch to UKIP of former Conservative candidate for Hull and West Hessle, Mike Whitehead. While the Tories insist it's not a defection, on the basis the party sacked Mr Whitehead last Wednesday, his new boss Nigel Farage tells reporters he was "pretty confident a fortnight ago" that Mr Whitehead would join UKIP.

Mr Whitehead was in dispute with fellow Conservatives on East Riding Council before Easter, says Mr Farage, but remained the Tory candidate at 09:30 BST  today.

Image source, PA

If eating in public is risky for a politician, surely leaning over the edge of a swimming pool is tantamount to dicing with death. Here's Nick Clegg, taking a break from the stresses and strains of the campaign trail, at Bath Spa. If he takes a tumble we can presumably expect headlines along the lines of "Did he jump? Or was he pushed?"

Sean Curran
Parliamentary correspondent

We know our avid readers are hooked on election gossip. But, amazingly, not everyone's so immersed in politics.

"There’s nothing like a couple of days away from work to give you a bit of perspective," says our correspondent Sean Curran. He's been enjoying a couple of days off "just hanging about" - his words, not ours. "You know the sort of thing, a cup of coffee here, a longish wait for a blood test there."

"During my entirely unscientific, unrepresentative, idling I heard lots of conversations about holidays, television programmes, one or two celebrities and the triumphs and mishaps of peoples’ relatives.

"My fears that teenagers really do speak another language were confirmed, but I didn’t hear anyone talking about the election. It could be that I’m spending my free time in the wrong places (or the right ones depending on your point of view) but perhaps the election hasn’t really taken off yet and grabbed the public imagination?"

It shows why parties repeatedly keep pushing the same themes, he says, "in the hope they eventually catch the attention of my fellow hangers-about".

That tweet featured Conservative candidate Robert Halfon, in case you weren't sure.

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Image source, Twitter

Image source, AP

The Lib Dems say the Conservatives are trying to pinch the credit for their income tax policy. Well,according to the Daily Mirror,, externalthey could make a case for them trying to steal their photo opportunity ideas as well. Apparently Lib Dem leader in Scotland Willie Rennie was pictured feeding a lamb just a few days ago...

While the governing parties do battle to take credit for the income tax cut - in the form of an increase in the point at which people start paying - Labour's Treasury spokesman Chris Leslie argues that people are no better off at all.

That 2.5% sales tax increase, in 2011, has led to a situation where people are £1,100 a year worse off, while typical household incomes have fallen, Mr Leslie tells the BBC News Channel.