Cambridge Spies is a four-part British drama miniseries written by Peter Moffat and directed by Tim Fywell,[1] that was first broadcast on BBC Two in May 2003 and is based on the true story of four young men at the University of Cambridge who are recruited to spy for the Soviet Union in 1934.

The series is set from 1934 to 1951 and follows the lives of the best-known quartet of the Cambridge Five Soviet spies, Guy Burgess, Kim Philby, Anthony Blunt and Donald Maclean, who whilst studying at the University of Cambridge are courted by Soviet agents and recruited into a world of covert intelligence and espionage.

[2] Fueled by youthful idealism, a passion for social justice, a talent for lying and a hatred for fascism, the four take huge personal risks to pass Britain's biggest secrets to Moscow.

[7] Mark Lawson from The Guardian said "Cambridge Spies is high-class drama, but historically it's best regarded as a cover story".

The real story is exciting and incredibly revealing of the nature of the British establishment at the time and on an enduring level.