UK PM David Cameron promises to hold a referendum on EU membership by 2015 . However , Cameron used Wednesday 's speech in central London to say Britons should have a choice about whether to remain in the EU on the basis of a renegotiated settlement . Europeans Foreign Minister Barack Obama says Europe can not be `` a la carte '' Germany warns against `` cherry-picking '' saying French are in the same boat . Germany President Barack Obama had told Cameron the U.S. valued the UK 's place in the EU .
UK PM David Cameron promises to hold a referendum on EU membership by 2015 . Europeans Foreign Minister Barack Obama says Europe can not be `` a la carte '' Germany warns against `` cherry-picking '' saying French are in the same boat . Germany President Barack Obama had told Cameron the U.S. valued the UK 's place in the EU .