CHESTER-LE-STREET, ENGLAND - MAY 30: Boris Johnson MP walks past the battle bus during a visit Chester-Le-Street Cricket Club as part of the Brexit tour on May 30, 2016 in Chester-Le-Street, England. Boris Johnson and the Vote Leave campaign are touring the UK in their Brexit Battle Bus on a campaign hoping to persuade voters to back leaving the European Union in the June 23rd referendum. (Photo by Ian Forsyth/Getty Images)
