Anglo Amalgamated Film Distributors Limited ; Michael Relph's & Basil Dearden's production ; original screenplay by James Kennaway ; produced by Michael Relph ; directed by Basil Dearden
Studio Canal ; London Independent Producers present a Joseph Losey production ; screenplay, Harold Pinter ; producers, Joseph Losey, Norman Priggen ; director, Joseph Losey
Rizzoli Films and Salvatore Argento present a film by Dario Argento ; written by Dario Argento, Bernardino Zapponi ; a SEDA Spettacoli production ; directed by Dario Argento
WingNut Films ; in association with the New Zealand Film Commission & New Zealand On Air ; written and directed by Peter Jackson & Costa Botes ; produced by Sue Rogers