Matthew Macfadyen John Stonehouse Actor, Executive Producer Emer Heatley Sheila Buckley Actor Kevin R. McNally Harold Wilson Actor Keeley Hawes Barbara Stonehouse Actor Simon Greenall Speaker at The House of Commons Actor Dorothy Atkinson Betty Boothroyd Actor Rich Keeble Producer Actor, Producer Celia Robertson Civil Servant Actor Orla Hill Jane Stonehouse Actor Aoife Checkland Julia Stonehouse Actor Igor Grabuzov Alexander Marek Actor Jonathan Rhodes BAC Spokesman Actor Adrian Metcalfe Teller Actor Jeremy Secomb Rod Murray Actor Carl Batchelor Walters Actor David Nellist Dave Actor Celeste Wong Psychologist Actor Shem Hamilton Inmate Actor Archie Barnes Matthew Stonehouse Actor Sam Lockwood Desk Clerk Actor Ruth Kenley-Letts Producer, Executive Producer Ellie Wood Producer, Executive Producer John Preston Writer, Executive Producer Rolfe Kent Original Music Jon S. Baird Executive Producer, Director Neil Blair Executive Producer Polly Hill Executive Producer Diederick Santer Executive Producer