LONDON, ENGLAND - JANUARY 31: British Prime Minister Theresa May leaves 10 Downing Street on January 31, 2017 in London, United Kingdom. Last night thousands of protestors demonstrated around the UK against President Trump's State Visit invitation. Today the Prime Minister's office said that a visit from the President was 'months away'. (Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - JANUARY 31: British Prime Minister Theresa May leaves 10 Downing Street on January 31, 2017 in London, United Kingdom. Last night thousands of protestors demonstrated around the UK against President Trump's State Visit invitation. Today the Prime Minister's office said that a visit from the President was 'months away'. (Photo by Jack Taylor/Getty Images)