- Author:
- Georg Buchner
- Translated by:
- Victor Price
- Music played by:
- Lionel Salter
- Producer:
- Martin Esslin
- Danton:
- Joss Ackland
- Robespierre:
- Kenneth Haigh
- St Just:
- Ronald Pickup
- Julie:
- Joan Miller
- Marion:
- Glenda Jackson
- Camille Desmoulins:
- David Spenser
- Legendre:
- Michael Deacon
- Herault-Sechelles:
- Frederick Treves
- Lacroix:
- John Pullen
- Philippeau:
- Peter Williams
- Fabre d'Eglantine:
- Michael Spice
- Mercier:
- Malcolm Hayes
- Tom Payne:
- John Bentley
- Barere:
- Hector Ross
- Collot d'Herbois:
- Godfrey Kenton
- Billaud-Varennes:
- John Bryning
- Chaumette:
- Wilfrid Carter
- Foufluier-Tinville, the public prosecutor.:
- Rolf Lefebvre
- Amar:
- John Wyse
- Vouland:
- Michael Spice
- Herman, Judge of the Revolutionary Tribunal:
- John Baddeley
- Simon, a retired Prompter:
- Lockwood West
- Simon's wife:
- Hilda Kriseman
- Laflotte:
- Nicholas Edmett
- General Dillon:
- Wilfred Carter
- Lucile Desmoulins:
- Gretta Gouriet
- Rosalie:
- Pauline Letts
- Adelaide:
- Kathleen Helme
- Narrator:
- Denis McCarthy
- Other parts played by:
- Alaric Cotter
- Other parts played by:
- Jan Edwards
- Other parts played by:
- Marjorie Westbury
- Other parts played by:
- Peter Baldwin
- Other parts played by:
- Brian Haines
- Other parts played by:
- Peter Pratt
- Other parts played by:
- Ralph Truman
- Other parts played by:
- Antony Viccars
- Other parts played by:
- Francis de Wolff
