High Quality Content by WIKIPEDIA articles! Sadie Isabelle Amy Miller (born 25 February 1985, Hammersmith, London, England) is an English actress and the daughter of actor Brian Miller and actress Elisabeth Sladen. As a child, she did extensive voice work and at eight made her TV debut as Penny, the on-screen daughter of Minnie Driver`s character, in the BBC Screen One film Royal Celebration alongside Keira Knightley, Rupert Graves and Leslie Phillips.