The Hitchhiker's Guide to the Galaxy cast lists

A blank cell in the table indicates that the information is unknown.
"N/A" indicates that the role in question does not exist for that version of the story.
Columns are in chronological order from 1978–2005, except for the two German radio series (1981 and 1990–1991).

Roger Blake: ♠

Sandra Dickinson as "Tricia McMillan"

Stephen Moore (voice)

Warwick Davis (costume)

♦ "The Rainbow" production ♥ Science Fiction Theatre of Liverpool production ♠ Theatr Clwyd Production

A blank cell in the table indicates that the information is unknown.
"N/A" indicates that the role in question does not exist for that version of the story.

"Dust cloud" voice: Leslie Phillips

Charlotte Green as herself
Peter Donaldson as himself
Sir Patrick Moore as himself

...
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