Sara Kingdom

Sara Kingdom is a fictional character played by Jean Marsh in the long-running British science fiction television series Doctor Who. A security officer for Mavic Chen from the 40th century, she later joined the First Doctor and Steven to work against Chen's interests. She is sometimes classed as a companion of the First Doctor but the BBC's official Doctor Who website does not include her in their list of companions. Her status as a companion is commented upon in its Episode Guide.

Sara appeared in parts four to twelve of the twelve-part 1965 serial The Daleks' Master Plan. Only two episodes in which she appears still exist in the BBC archives. Her character took on elements of the companion role to replace the character of Katarina, who was killed off earlier in the same story.