Edmond O'Brien
Winston Smith of the Outer Party
Jan Sterling
Julia of the Outer Party
Michael Redgrave
O'Connor of the Inner Party
David Kossoff
Charrington the Junk Shop Owner
Mervyn Johns
Jones
Donald Pleasence
R. Parsons
Carol Wolveridge
Selina Parsons
Ernest Clark
Outer Party Announcer
Patrick Allen
Inner Party Official
Ronan O'Casey
Rutherford
Bartlett Mullins
Syme
Michael Ripper
Outer Party Orator
Ewen Solon
Outer Party Orator
Kenneth Griffith
Prisoner
Walter Gotell
Guard (uncredited)
Patrick Troughton
Man on Telescreen (uncredited)
John Vernon
Big Brother (uncredited)
Barbara Keogh
Special Woman (uncredited)
Barbara Cavan
Woman (voice) (uncredited)
Anthony Jacobs
Telescreen (voice) (uncredited)
Bernard Rebel
Kalador (uncredited)