A book which was ground baking in its cold war ambience and the boring corridors of power. The book was a great success!

“Saltzman wanted The Ipcress File to be an ironic and downbeat alternative to the portrayal of espionage in Ian Fleming‘s novels about the spy James Bond and the film series which followed from them.-) ” https://en.wikipedia.org/wiki/The_Ipcress_File_(film)

Made into a movie with Michael Caine as the protagonist on a budget below a million dollars, It is ranked among the top 100 Best British Films of the 20th Century.