Sadie Isabelle Amy Miller (born 25 February 1985) is an English actress and author. She is known for her portrayal of Natalie Redfern in the Sarah Jane Smith audio drama series by Big Finish, her novel, Moon Blink, from Candy Jar Books's series, Lethbridge-Stewart, as well as her association with the science fiction series, Doctor Who. She is the daughter of actors Brian Miller and Elisabeth Sladen.
