LONDON, ENGLAND - JULY 12:   Queen Letizia (L) and Prince Philip, Duke of Edinburgh leave in a state carriage following a welcome ceremony at 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 Ben Stansall - WPA Pool/Getty Images)