 Campbell lost his seat at the 1970 general election by 1,675 votes, and returned to the Bar (he had practised occasionally while a Member of Parliament).He was Master of the Bench of the Inner Temple in that year, and two years later was appointed a Recorder of the Crown Court.In January 1976, Campbell's sentence of a 31-year-old mother of a two-month-old baby to six months' imprisonment was attacked by the mother's MP Robert Kilroy-Silk.