Un enemigo del pueblo
Jefford entered a period of acting with Frank Hauser's Oxford Playhouse which included the first of her three "Cleopatra"s, Racine's "Phèdre" and Lina in "Misalliance" which transferred to the Criterion Theatre. In the early 1970s she played Katherine Stockman in Ibsen's "An Enemy of the People" at the Chichester Theatre Festival.