- Unknown:
- Sir Thomas Malory
- Unknown:
- Norman Shelley
- Unknown:
- Robert Eddison
- Unknown:
- Maxine Audley
- Unknown:
- Robert Hardy
- Unknown:
- Derek Brewer
- Music By:
- Stephen Dodgson
- Produced By:
- Raymond Raikes
- Sir Thomas Malory:
- Norman Shelley
- Sir Launcelot du Lake:
- Robert Hardy
- The Voice of the Sangrail:
- Basil Langton
- Sir Galahad, son of Sir Launcelot:
- Nigel Lambert
- King Arthur:
- Robert Eddison
- Queen Guenevere:
- Maxine Audley
- Sir Bernard of Astolat:
- James Dale
- Elaine la Blanche, his daughter:
- Elizabeth Proud
- Sir Lavain, younger son of Sir Bernard:
- John Rye
- Sir Gawain, nephew of King Arthur:
- Henry Stamper
- A Hermit:
- Felix Felton
- Sir Bors de Ganis, nephew of Sir Launcelot.:
- Peter Tuddenham
