 | Richard Burton als Martin Dysart |
 | Peter Firth als Alan Strang |
 | Joan Plowright als Dora Strang |
 | Harry Andrews als Harry Dalton |
 | Colin Blakely als Frank Strang |
 | Eileen Atkins als Hesther Saloman |
 | Jenny Agutter als Jill Mason |
 | Kate Reid als Margaret Dysart |
 | John Wyman als Horseman |
 | Elva Mai Hoover als Miss Raintree |
 | Patrick Brymer als Hospital Patient |
 | Ken James als Mr. Pierce |
| Peter Shaffer | Writer |
| Sidney Lumet | Director |
| Ron Berkeley | Makeup Artist |
| Jack Fitzstephens | Sound Editor |
| Carol Spier | Assistant Art Director |
| Elliott Kastner | Producer |
| Oswald Morris | Director of Photography |
| Richard Rodney Bennett | Music |
| Dick Vorisek | Sound Re-Recording Mixer |
| Tony Walton | Production Design |
| Tony Walton | Costume Design |
| James Sabat | Sound Mixer |
| Simon Holland | Art Direction |
| John Victor-Smith | Editor |
| Rose Tobias Shaw | Casting |
| Lester Persky | Producer |
| Sanford Rackow | Sound Editor |
| Harvey Rosenstock | Assistant Editor |
| Angela Morley | Conductor |
| Denis Holt | Associate Producer |
| Clare Walker | Casting |
| Colin M. Brewer | Production Supervisor |
| Gerry Holmes | Set Dresser |
| David Tringham | Assistant Director |
| Patti Unger | Wardrobe Master |
| Ken Brooke | Makeup Artist |
| Dave Jordan | Property Master |
| Denis Fraser | Best Boy Grip |
| James Keeler | Hairdresser |
| Brenda Dabbs | Wardrobe Supervisor |
| Kit West | Special Effects |
| John Tythe | Electrician |
| Arthur Carroll | Production Accountant |
| Peter Shatalow | Assistant Editor |
| Jack Carter | Construction Coordinator |
| Ron Gillham | Key Grip |
| Matt Tundo | Camera Operator |
| Maurice Arnold | Focus Puller |
| Chris Holmes | Gaffer |
| Ninkey Adamson | Assistant Art Director |
| Guenter Bartlik | Scenic Artist |
