Full Cast — The Hitch Hiker's Guide to the Galaxy (1981)

Simon Jones

Arthur Dent

David Dixon

Ford Prefect

Peter Jones

The Book

Sandra Dickinson

Trillian

Mark Wing-Davey

Zaphod Beeblebrox

David Learner

Marvin

Stephen Moore

Frankie Mouse (voice) / Marvin (voice) / Whale (voice) / Marvin (voice)

David Tate

Eddie (voice) / Benjy Mouse (voice)

Richard Vernon

Slartibartfast

Martin Benson

Vogon Captain

Douglas Adams

Man in Pub (uncredited) / Man in Ocean (uncredited)

Rayner Bourton

Newscaster

Cleo Rocos

Alien

David Prowse

Bodyguard

Jon Glover

Management Consultant

Beth Porter

Marketing Girl

Valentine Dyall

Deep Thought

Peter Davison

Dish of the Day

Aubrey Morris

Captain

Antony Carrick

Lunkwill