Name	Known for
Pauline Yates Harriet Preston Harriet Preston See fewer	Harriet's Back in Town (1972)
William Russell Tom Preston Tom Preston See fewer	The Great Escape (1963)
Miranda Bell Jane Preston Jane Preston See fewer	The Imitation Game (2014)
Jack Allen Col. Haversham Col. Haversham See fewer	The Four Feathers (1939)
Sally Bazely Helen Chapman Helen Chapman See fewer	Harriet's Back in Town (1972)
Jacqueline Blackmore Gladys (as Jackie Blackmore) Gladys (as Jackie Blackmore) See fewer	Outbreak of Murder (1962)
Veronica Lang Louise Wimbourne Louise Wimbourne See fewer	Don's Party (1976)
Ray Lonnen Det. Sgt. Flood Det. Sgt. Flood See fewer	Holly (1972)
Margery Mason Mrs. Bigsby Mrs. Bigsby See fewer	The Princess Bride (1987)
Edwin Richfield Frank Chapman Frank Chapman See fewer	Quatermass and the Pit (1967)
Toby Robins Laura Denison Laura Denison See fewer	For Your Eyes Only (1981)
Brian Wilde Brian Rudkin Brian Rudkin See fewer	Doing Time (1979)