Filmed on a relatively low budget of under £ 100,000 , the film was the biggest British box-office success of its year . The film was entered into the 1946 Cannes Film Festival and won an Academy Award for Best Original Screenplay ( for Sydney and Muriel Box ) in 1946 . The film has the 10th top audience of all films , 17.9 million , placing it above most modern box-office successes
1946 Cannes Film Festival
1946 Cannes Film Festival
The Seventh Veil