LONDON, ENGLAND - MAY 10: Queen Elizabeth II speaks with Prime Minister David Cameron (2nd R), as Chris Grayling (R), leader of the House of Commons and Archbishop of Canterbury Justin Welby (C) look on during a reception in Buckingham Palace to mark the Queen's 90th birthday on May 10, 2016 in London, England. (Photo by Paul Hackett - WPA Pool / Getty Images)
