Helen Mirren

Deep Thought (voice)

Bill Nighy

Slartibartfast

John Malkovich

Humma Kavula

Zooey Deschanel

Trillian

Garth Jennings

Director

Sam Rockwell

Zaphod Beeblebrox

Kelly Macdonald

Reporter

Thomas Lennon

Eddie the Computer (voice)

Martin Freeman

Arthur Dent

Ian McNeice

Kwaltz (voice)

Stephen Fry

Narrator / The Guide (voice)

Alan Rickman

Marvin (voice)

Yasiin Bey

Ford Prefect

Warwick Davis

Marvin

Richard Griffiths

Jeltz (voice)

Simon Jones

Ghostly Image

Albie Woodington

Barman

Anna Chancellor

Questular Rontok

Bill Bailey

The Whale (voice)

Su Elliot

Pub Customer

Dominique Jackson

Fook

Steve Pemberton

Mr. Prosser

Mark Longhurst

Bulldozer Driver

Jack Stanley

Lunkwill

Mak Wilson

Vogon Interpreter (voice)

Douglas Adams

Executive Producer

Derek Evans

Executive Producer

Robbie Stamp

Executive Producer