Stephen started his career in the film industry in the 1960s working on a raft of British films in the major UK studios. He then formed a production company and made training and documentary films as well as shooting location scenes for American television dramas. He became an agent first at London Management, representing technicians and directors, and then joined the film and television department at Curtis Brown in order to represent writers, before starting his own agency with the actor’s agent Larry Dalzell, which led to his partnership with Harvey Unna in the mid 70s.

Stephen specializes in representing screenwriters for film, television, and the theatre. Stephen was one of the leading agents representing the PACT that initiated and negotiated the Guild agreements with BBC, ITV and PACT. Stephen Durbridge was the founding partner of The Agency in 1995.