Susan Sheridan (24 February 1947-8 August 2015[1]) played Simon and Mrs Streeter in the Big Finish Doctor Who audio story The Hollows of Time.
Career[[edit] | [edit source]]
Sheridan was best known as the original voice of Trillian in the original 1978 The Hitchhiker's Guide to the Galaxy radio series by Douglas Adams, a role later played by Sandra Dickinson in the TV adaptation. Sheridan returned to the role of Trillian in the 2004-2005 continuation of the radio series.