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David Cameron vows in/out referendum on EU

23 January 2013 Last updated at 09:01 GMT

British Prime Minster David Cameron has vowed to hold an in/out referendum on the UK's future in the EU if the Conservatives win the next election.

Speaking in London, Mr Cameron said that he hoped to negotiate a new settlement with Europe "with the single market at its heart" before the vote.

Earlier he insisted that asking the question in the current climate was a "false question", as the EU was in a state of flux and must first agree treaty change.