- Writer:
- John Hale
- Music:
- David Munrow
- Producer:
- Roderick Graham
- Director:
- Claude Whatham
- Thomas Seymour, uncle of Edward VI:
- John Ronane
- Fowler, Secretary to the King:
- Ian Barritt
- Edward VI:
- Jason Kemp
- John Dudley, Duke of Northumberland, Lord Protector:
- Philip Brack
- Elizabeth I:
- Glenda Jackson
- Kat Ashley, Elizabeth's governess:
- Rachel Kempson
- Sir Thomas Parry, Treasurer:
- Blake Butler
- Sir Robert Tyrwhit:
- Stanley Lebor
- Catherine Parr, widow of Henry VIII:
- Rosalie Crutchley
- Lady Tyrwhit:
- Nicolette Bernard
- William Cecil:
- Ronald Hines
- Thomas Cranmer, Archbishop of Canterbury:
- Bernard Hepton
- Mary Tudor:
- Daphne Slater
- Guildford Dudley:
- Robert Barry
- Lady Jane Grey:
- Sarah Frampton
- de Noailles, French Ambassador:
- Julian Holloway
- Renard, Ambassador to the Holy Roman Empire:
- Brendan Barry
- Sir Thomas Wyatt:
- Robert Garrett
- Gardiner, Bishop of Winchester and Lord Chancellor:
- Basil Dignam
- Earl Of Sussex:
- John Shrapnel
- Bridges, Lieutenant of the Tower:
- Kevin Brennan
- Guard:
- Richard Parry
- Sir Henry Bedingfield:
- Alan Foss
- Philip of Spain:
- Peter Jeffrey
