Sandra Dickinson

Sandra Dickinson (born 20 October 1948 ) is an American actress and the mother of Georgia Moffett, the former wife of Peter Davison, the mother-in-law of David Tennant and grandmother of Ty Tennant.

In 1996, she appeared as Maggie in the audio serial The Ghosts of N-Space.

She is known for her role as Trillian in the TV series adaptation of The Hitchhiker's Guide to the Galaxy.