Return of the infamous five

It has become fashionable since the fall of the Soviet Union to diagnose communist fellow travelling as a form of Freudian neurosis. Where class resentment exists it is said to emanate less from angry young proletarians than from well-spoken youths intent on garrotting their dividend-drawing fathers.

Most contemporary accounts of the Cambridge spy ring, which passed top secret information to the Soviet Union during the Cold War, draw heavily on this cliché.