It was nominated for 6 Academy Awards, including Paul Dehn for Best Adapted Screenplay. Paul Dehn also wrote the screenplays for Goldfinger (1964), The Spy Who Came In From The Cold (1965), Beneath the Planet of the Apes (1970), Escape from the Planet of the Apes (1971), Conquest of the Planet of the Apes (1972), and Battle For the Planet of the Apes (1973). Paul Dehn passed away in 1976, as well.
Christie, who died not long after the film's release, was apparently generally happy with it, except for Albert Finney's mustache. It did not look, she thought, as she had described in her book, like "the finest moustache in England."