An Indian-born, British trained character actor, Seth began his career after graduating from LAMDA in the late 1960s. He worked as an actor and director in British repertory before landing a role in Peter Brook's version of "A Midsummer Night's Dream" which toured the USA in 1972. He made brief appearances on US TV shows and made his feature film debut in Richard Lester's "Juggernaut" (1974). Because of his ethnicity, roles in classical productions were scarce and Seth decided to retire from acting and returned to India to pursue a career as a journalist and editor.

At the urging of Richard