LONDON, ENGLAND - JUNE 26:  Chancellor of the Exchequer George Osborne arrives in Downing Street as an emergency security meeting is held following the deadly attacks on tourists in Tunisia, on June 26, 2015 in London, England. Around 37 people, mainly foreign tourists, are believed to have been killed as gunmen launched an attack on a beach in the Tunisian resort of Sousse.  (Photo by Carl Court/Getty Images)