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)
Doran Godwin Dorothy Brown Dorothy Brown See fewer	Emma (1972)
Geraldine Gwyther Client Client See fewer	Adam Adamant Lives! (1966)
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)
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 Harry Harry See fewer	The Blue Max (1966)