Name	Known for
Norman Barrs Mr. White Mr. White See fewer	The Yeomen of the Guard (1957)
Lee Grant Helen Cartwright Helen Cartwright See fewer	In the Heat of the Night (1967)
Maureen Hurley Ivy Rumble Ivy Rumble See fewer	The Alcoa Hour (1955)
John Mackwood Ernest Parker Ernest Parker See fewer	Camera Three (1954)
Patrick Macnee Guy Cartwright Guy Cartwright See fewer	The Avengers (1961)
E.G. Marshall Mr. X Mr. X See fewer	12 Angry Men (1957)
Harry McNaughton Judge Judge See fewer	The Vagabond King (1956)
Meg Mundy Louise Lang Louise Lang See fewer	Fatal Attraction (1987)
Peter Pagan Peter Lightfoot Peter Lightfoot See fewer	9½ Weeks (1986)
Marie Paxton Nurse Potts Nurse Potts See fewer	Ouanga (1936)
John Sutton Mr. Black Mr. Black See fewer	The Three Musketeers (1948)
Geoffrey Toone Robert Cartwright Robert Cartwright See fewer	Zero Hour! (1957)