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)
Sally Bazely Helen Chapman Helen Chapman See fewer	Harriet's Back in Town (1972)
Peter Blythe James Armitage James Armitage See fewer	A Challenge for Robin Hood (1967)
Dennis Chinnery Mr. Atkinson Mr. Atkinson See fewer	Doctor Who (1963)
June Jago Miss Drummond Miss Drummond See fewer	The Man from Snowy River (1982)
Margery Mason Mrs. Bigsby Mrs. Bigsby See fewer	The Princess Bride (1987)
Noelle Middleton Mary Atkinson Mary Atkinson See fewer	Court Martial (1954)
Barry Quin Tarquin Melville Tarquin Melville See fewer	2:22 (2017)
Edwin Richfield Frank Chapman Frank Chapman See fewer	Quatermass and the Pit (1967)
Harry Towb Sean McGuire Sean McGuire See fewer	The Blue Max (1966)
Brian Wilde Brian Rudkin Brian Rudkin See fewer	Doing Time (1979)