Britons back leaving EU if freedom of movement unchanged - poll

If British Prime Minister David Cameron is unable to achieve changes to the European Union's freedom of movement rules, Britons will vote to leave the bloc, according to a poll published on Tuesday. Cameron has promised to renegotiate Britain's EU ties ahead of a membership referendum by the end of 2017 but his plan to reduce immigration by curbing some welfare payments to EU migrants has proved a stumbling block, with other nations saying it is discriminatory and therefore against EU law. The I