• 
  Dean Weir

   Bodyguard (1 episode, 2017)
• 
  Annarie Boor

   Member of Parliament (1 episode, 2017)
• 
  Jay Simpson

   Marcello (3 episodes, 2017)
• 
  Charles Edwards

   King Henry IX (3 episodes, 2017)
• 
  Sally Phillips

   Queen Katerina (2 episodes, 2017)
• 
  Colin Salmon

   Maj. Francis Hornsby-Bray (2 episodes, 2017)
• 
  Kara Tointon

   Serena (2 episodes, 2017)
• 
  Don Warrington

   Gilbert (2 episodes, 2017)

• 
  Gina Bellman

   Lady Leonora (3 episodes, 2017)
• 
  Annette Crosbie

   Queen Charlotte (3 episodes, 2017)
• 
  Duncan Pow

   Byron (3 episodes, 2017)
• 
  Matthew Raymond

   Palace Security (2 episodes, 2017)
• 
  Daniel Quirke

   Alastair / ... (3 episodes, 2017)
• 
  Ben Ashenden

   Damian (3 episodes, 2017)
• 
  Francesca Regis

   Princess Alice (2 episodes, 2017)

• 
  Kirk Barker

  Quinton
• 
  Sophie Fletcher

  Waitress
• 
  Pippa Haywood

  Prime Minister Oxlade
• 
  Dominique Moore

  Entertainment Newsreader
• 
  Robert Portal

  Edwin, the Duke of Cumberland