Alexis Zorbas, Zorba the Greek is a 1964 British-Greek drama film directed by Cypriot Michael Cacoyannis and starring Anthony Quinn as the title character. It is based on the novel Zorba the Greek by Nikos Kazantzakis. The supporting cast includes Alan Bates, Lila Kedrova, Irene Papas, Giorgos Fountas and Sotiris Moustakas. Music by Mikis Theodorakis
From left: King Constantine of Greece, Queen Frederike of Greece and Prince Charles of Engand. I am not sure what this ceremony is for, but I believe it may be a memorial service possibly for Queen Frederike's husband?