Harold Adrian Russell Philby, better known to the world as Kim, was an Englishman who spied for the Soviet Union. Philby was a high-ranking member of British intelligence but who decided to operate as a double agent, that was until he defected to the Soviet Union in 1963. It was around this time that it was revealed that Philby was in fact a member of the spy ring now known as the Cambridge Five. This collective also included Donald Maclean, Guy Burgess, Anthony Blunt and possibly John Cairncross. It is believed that Philby was the most successful at providing secret information to the USSR out of this group.  Philby died of heart failure in Moscow in 1988. He was awarded a hero’s funeral and numerous medals by the USSR.