- Writer/Producer:
- Donald Wilson
- Sound:
- Brian Hiles
- Make-up:
- Ann Ferriggi
- Designer:
- Spencer Chapman
- Director:
- David Giles
- James, Duke of York:
- John Westbrook
- Charles II:
- James Villiers
- Mallard:
- Peter Morton
- Chiffinch:
- Barry Wade
- Sidney Godolphin:
- John Standing
- John Churchill:
- John Neville
- Pringle:
- Hugh Martin
- Prosecutor:
- John Graham
- Sarah Churchill:
- Susan Hampshire
- Laurence Hyde:
- John Ringham
- Lord Halifax:
- Austin Trevor
- Lord Russell:
- Colin Bean
- Earl of Shaftesbury:
- Frederick Peisley
- Duke of Monmouth:
- James Kerry
- Jessie:
- Maureen Morris
- Becket:
- John Tordoff
- Barillon:
- David March
- Louis XIV:
- Robert Robinson
- Lord Bruce:
- Alan Lee
- Mrs Jennings:
- Daphne Heard
- Princess Anne:
- Margaret Tyzack
- Earl of Mulgrave:
- John Dane
- Duchess Mary:
- Sheila Gish
- Lady Clarendon:
- Pauline Loring
- George of Denmark:
- Roger Mutton
