London Mayor Boris Johnson is to speak at the official opening of the 30th edition of World Travel Market on 9 November. Due to be held at Excel London from 9 to 12 November, the international travel B2B exhibition is estimated to attract nearly 50,000 travel industry visitors from over 200 countries. “Boris Johnson has become the face of London”, says chairman of WTM, Fiona Jeffery. “He became known to millions on television when he invited the world in Beij...