Carole Ann Lillian Ford (née Higgins; born 16 June 1940) is a British actress best known for her roles as Susan Foreman in the BBC science fiction television series Doctor Who, and as Bettina in the 1962 film adaptation of The Day of the Triffids. Carole Ann Lillian Ford (née Higgins; born 16 June 1940) is a British actress best known for her roles as Susan Foreman in the BBC science fiction television series Doctor Who, and as Bettina in the 1962 film adaptation of The Day of the Triffids.