David Cameron 'will campaign to leave' if EU leaders don't agree to in-work benefits demands

Charles Grant, the director of the CER warned that Downing Street was risking a major miscalculation about the extent to which key EU countries would bend in order to keep Britain in."If the British really say, 'give us this protocol for an opt-out for existing rules on in-work benefits, or we will campaign to leave', then I believe that many of our Europe partners would rather see us leave than sacrifice the fundamental EU principles of non-discrimination."