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)
Vincent Ball Kenneth Hammond Kenneth Hammond See fewer	Where Eagles Dare (1968)
Sally Bazely Helen Chapman Helen Chapman See fewer	Harriet's Back in Town (1972)
Michael Hawkins Mr. Sample Mr. Sample See fewer	Dentist in the Chair (1960)
Judy Matheson Sarah Chivers Sarah Chivers See fewer	Blake's 7 (1978)
Edwin Richfield Frank Chapman Frank Chapman See fewer	Quatermass and the Pit (1967)
Jo Rowbottom Julie Ferguson Julie Ferguson See fewer	Doctor Who (1963)
Harry Fielder Supporting Artist (uncredited) Supporting Artist (uncredited) See fewer	Doctor Who (1963)