- Rosalie Crutchley - Catherine Parr
- Angela Pleasence - Catherine Howard
- Peter Cellier - Sir Christopher Hales
- Simon Prebble - Francis Dereham
- Annette Crosbie - Catherine of Aragon
- Dorothy Tutin - Anne Boleyn
- Mollie Sugden - Lotte
- Jo Kendall - Anne Stanhope
- Ralph Bates - Thomas Culpepper
- Hilary Mason - Lady Boleyn
- Catherine Lacey - Dowager Duchess of Norfolk
- John Woodnutt - Henry VII
- Bernard Hepton - Archbishop Thomas Cranmer
- Robert James - Robert Barnes
- Peter Stephens - Don Gutierre Gómez de Fuensalida
- Patrick Troughton - Duke of Norfolk
- Basil Dignam - Bishop Gardiner
- Howard Goorney - Will Somers
- John Ronane - Thomas Seymour
- Anne Stallybrass - Jane Seymour
- Elizabeth Bell - Anne Askew
- Ronald Adam - Cardinal Campeggio
- Sheila Burrell - Lady Rochford
- Elvi Hale - Anne of Cleves
- John Baskcomb - Cardinal Wolsey
- Peter Reeves - Philip of Hesse
- Peter Bennett - Nobleman
- Ken Wynne - Dr. de Puebla
- Donald Bisset - Earl of Surrey
- Margaret Ford - Maria de Salinas
- Joyce Mandre - Francesca de Carceres
- Robert Hartley - Bishop Fox
- Will Leighton - Tutor
- Valentine Palmer - Lord Willoughby
- Ina De La Haye - Inez de Venegas
- Verina Greenlaw - Princess Mary
- Raymond Adamson - Duke of Suffolk
- Michael Osborne - Mark Smeaton
- Jonathan Newth - George, Viscount Rochford
- Wolfe Morris - Thomas Cromwell
- Christopher Hancock - Sir Henry Norreys
- Robert Cawdron - Sir William Kingston
- Patricia Heneghan - Lady Kingston
- Arnold Peters - Armourer
- Gillian Bailey - Dorothy Seymour
- Dorothy Black - Lady Margaret Seymour
- Howard Lang - Sir John Seymour
- William Abney - Sir Frances Bryan
- Louis Haslar - Sir Nicholas Carew
- Marion Mathie - Lady Exeter
- Alison Frazer - Princess Mary
- Patrick Godfrey - Sir Thomas Wriothesley
- James Mellor - Holbein
- Carol MacReady - Amalie
- Daniel Moynihan - Edward Seymour
- Daniel Moynihan - Lord Hertford Edward Seymour
- William Maxwell - Duke Wilhelm of Cleves
- David Butler - Christopher Mont
- Norman Atkyns - Henry's Gentleman
- Melanie Ackland - Lady Margaret
- Julia Cornelius - Anne Carey
- John Richmond - Surgeon
- Sue Bishop - Lady-in-Waiting
- Karen Ford - Lady Lane
- Mark Shivas
Patrick Godfrey hace el papel de Sir Thomas Wriothesley.
Keith Michell hace el papel de Henry VIII of England.
Anthony Quayle interpreta a Narrator en la serie.
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