Allwatchers Review - The Ipcress File
Analytical review of the plot, setting, theme, and structure of the film.
Apollo Movie Guide - The Ipcress File
Review, links, and cast information.
Britmovie: The Ipcress File
Cast, images and synopsis.
IMDb - The Ipcress File (1965)
Plot synopsis, list of cast and crew, and user ratings.
The New York Times: The Ipcress File
Review by Bosley Crowther.
TV Guide Online: The Ipcress File
Brief review and credits.