Rosalyn was a child actress from the age of ten, appearing in The Devil Rides Out (1968), Jane Eyre (1970), and The Amazing Mr Blunden (1972).
Rosalyn was educated at the Royal Ballet School.
She has two daughters, called Arielle and Sophia.
Rosalyn is now recording audio-books for Random House. Her recent work includes Bridget Jones: The Edge of Reason, The Goddess Rules and the new Kazuo Ishiguro novel, Never Let Me Go.