This is the earliest big screen version of George Orwell's classic dystopian novel, released only seven years after its publication. Michael Anderson's adaptation is an interesting offshoot of the 1984 phenomenon, rather than a great political film. It's all there though, the Thought Police, Newspeak, Room 101, Big Brother...
The source is a novel of ideas, a work of political philosophy and there are limits to how much a film can actually replicate Orwell's prose. It looks like fifties sci-fi, though the sets are appropriately grim. Much of the dialogue is exposition, but the relative lack of nuance and depth makes the screen version less immersive.
So instead the narrative focuses on the subversive romance between Winston Smith and Julia. For commercial reasons there were American leads. Edmond O'Brien is too chubby and toothy, and his desperation never feels real. Jan Sterling is strange casting, but she's better and has a long close up at the end which is the best moment in the film.
However, it does seem that liberation for her is the freedom to be a fifties American housewife. There isn't the dirty horror of Nigel Kneale's famous BBC adaptation of '54. This film was financed by the CIA as anti-Soviet propaganda, but it more strikingly echoes Nazi Germany than proposes a vision of future dystopia.