The Hitchhiker's Guide to the Galaxy (2005)

Director: Garth Jennings

Starring: Martin Freeman, Mos Def, Stephen Fry, John Malkovich, Bill Nighy, Simon Jones, Warwick Davis, Sam Rockwell, Zooey Deschanel, Alan Rickman, Helen Mirren, Bill Bailey

Locations

Elstree Studios, Borehamwood, Hertfordshire

Covent Garden, London
The Masonic Hall was used for the religious scenes with John Malkovich.

Tredegar, Gwent
The scenes where Arthur, Ford and Zaphod are being slapped in the face by thought-sucking plants were filmed in quarry near here. The same location was also used for the first meeting with Slartibartfast.