The Queen And The Duke of Edinburgh Attend A Service At St Paul's Cathedral To Mark The Centenary Of The Order Of The British Empire [Getty Images]

LONDON, ENGLAND - MAY 24: Prince Philip, Duke of Edinburgh attends a service to mark the one hundredth anniversary of the Order of the British Empire at St Paul's Cathedral on May 24, 2017 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images) — see more

LONDON, ENGLAND - MAY 24: Prince Philip, Duke of Edinburgh attends a service to mark the one hundredth anniversary of the Order of the British Empire at St Paul's Cathedral on May 24, 2017 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

UK Press Mark Cuthbert