LONDON, ENGLAND - AUGUST 03: British Prime Minister Theresa May, shoe detail, visits Martinek joinery factory on August 3, 2016 in London, United Kingdom. (Photo by Neil Hall - WPA Pool/Getty Images)

LONDON, ENGLAND - AUGUST 03: British Prime Minister Theresa May, shoe detail, visits Martinek joinery factory on August 3, 2016 in London, United Kingdom. (Photo by Neil Hall - WPA Pool/Getty Images)