By Guy Faulconbridge LONDON (Reuters) - Britain on Tuesday dismissed U.S. President-elect Donald Trump's unprecedented expression of support for Brexit campaigner Nigel Farage to be made British ambassador to Washington, saying pointedly that there is no vacancy for the job. Trump, who after his election victory met Farage before any EU leaders, said on Twitter that "many people" would like to see the former metals trader turned politician as Britain's ambassador. "Many people would like to see @Nigel_Farage represent Great Britain as their Ambassador to the United States.
