Britain could hold EU vote earlier than end of 2017

By William James and Kylie MacLellan LONDON (Reuters) - Prime Minister David Cameron will hold an early referendum on membership of the European Union if he can first reach a deal that satisfies his demands for major changes in Britain's relationship with the bloc, his spokesman said on Tuesday. Cameron, who won a majority in Thursday's general election, has pledged to renegotiate Britain's ties with Europe and then give voters an in-out referendum on EU membership by the end of 2