Elisabeth Sladen starred in roles on different media platforms.
Elisabeth Sladen . She was a regular cast member from 1973 to 1976 , alongside both Jon Pertwee and Tom Baker , and reprised the role many times in subsequent decades , both on Doctor Who and its spin-offs , K-9 and Company and The Sarah Jane Adventures . She moved to London in 1970 and an appearance in the police drama Z-Cars led to her being selected for a part in Doctor Who . She subsequently starred in other roles on both television and radio , before semi-retiring to bring up a family in the mid-1980s .