LONDON, ENGLAND - JULY 12:   Britain's Queen Elizabeth II stands with Prince Philip, Duke of Edinburgh as they wait to greet Spain's King Felipe and his wife Queen Letizia during a Ceremonial Welcome on Horse Guards Parade on July 12, 2017 in London, England.  This is the first state visit by the current King Felipe and Queen Letizia, the last being in 1986 with King Juan Carlos and Queen Sofia.   (Photo by Matt Dunham - WPA Pool/Getty Images)