In Pictures: Which previous presidents have met the Queen?
Donald Trump will be the 12th US president to meet the Queen when the pair have tea at Windsor Castle later on Friday.
The Queen met Barack Obama and his wife Michelle at Windsor Castle in April 2016 (John Stillwell/PA)
Her Majesty with George W Bush in June 2008 (Dominic Lipinski/PA)
With Bill Clinton in December 2000 (John Stillwell/PA)
The Queen welcomed George Bush Snr in 1989 (Martin Keene/PA)
Riding with Ronald Reagan in 1982 (Ron Bell/PA)
Jimmy Carter was one of six world leaders who was a guest at a State Dinner in 1977 (PA)
The Queen with Gerald Ford during a visit to Washington in 1976 (PA)
Richard Nixon came over in October 1970 (PA)
The Queen and Duke of Edinburgh welcomed John F Kennedy and his wife Jacqueline in June 1961 (PA)
With Dwight D Eisenhower in summer 1959 (PA)
Harry Truman with Princess Elizabeth in Washington in November 1951 (PA)
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