Britain's Queen Elizabeth II and Spanish King Felipe VI travel in a State Carriage  along The Mall in central London on July 12, 2017, on the first day of the Spanish Royals three day state visit. - Spanish King Felipe VI and Queen Letizia begin a state visit to Britain on Wednesday, as the two countries attempt to strengthen ties despite tensions over Britain's plans to leave the European Union. (Photo by Chris J Ratcliffe / AFP)        (Photo credit should read CHRIS J RATCLIFFE/AFP/Getty Images)