By Jonathan Davies

Ed Miliband has started the official election campaign by saying that David Cameron's pledge to hold an in-out referendum on the EU creates a "clear and present danger" to jobs and businesses.

After Parliament was dissolved just after midnight last night, and the official campaign period begins, the Labour leader outlined the party's "business manifesto" after receiving criticism from the business community.

The Conservatives want to renegotiate the UK's membership in the EU, and hold a referendum in 2017. But Ed Miliband said a Labour government would "return Britain to a leadership role" in the EU.

Unveiling Labour's Better Plan for Business at Bloomberg's headquarters in London, Mr Miliband said: "There could be nothing worse for our country or for our great exporting businesses than playing political games with our membership in Europe. David Cameron used to understand that.

"But in the past five years our place in the European Union has become less and less secure...

"He came to power promising to stop his party 'banging on about Europe'. Now if he carries on this way, he'll have us inside Europe banging on the door to leave or, even worse, outside Europe - banging on the door to be let back in."

Prime Minister David Cameron started his election campaign by telling British voters that they face a "stark choice" between him and Ed Miliband.