- Unknown:
- Peter Draper
- Unknown:
- Ross Vennor
- Producer:
- Morris Barry
- Director:
- Kenneth Ives
- Dr Dwight Enys:
- Richard Morant
- Francis Poldark:
- Clive Francis
- Justice Lister:
- Michael Gwynn
- Woman prisoner:
- Barbara Burnell
- Caroline Penvenen:
- Judy Geeson
- Unwin Trevaunance:
- Peter Clay
- Garth:
- Howard Bell
- Sir Hugh:
- Christopher Benjamin
- Painted lady:
- Jacky Allouis
- Demelza:
- Angharad Rees
- Verity:
- Norma Streader
- Clerk of Court:
- Charles Kinross
- George Warleggan:
- Ralph Bates
- Nicholas:
- Nicholas Selby
- Jud:
- Paul Curran
- Rabble leaders:
- Frank Jarvis
- Rabble leaders:
- Bill Rourke
- Boozer:
- Gordon Salkilld
- Foreman of Jury:
- Richard Holden
- Jeffrey Clymer:
- Wensley Pithey
- Sir Henry Bull:
- Philip Madoc
- Ross Poldark:
- Robin Ellis
- Salter:
- William Wilde
- Nick Vigus:
- Roy Evans
- Fop:
- James Hall
- Captain McNeil:
- Donald Douglas
- Lady Constance Bodrugan:
- Cynthia Grenville
- Captain Bray:
- Denis Holmes
