• 
  Naomie Harris

  Clara
• 
  James McAvoy

  Josh
• 
  Maggie O'Neill

  Poppy
• 
  Steve Sweeney

  Neighbour/Lager Lad
• 
  Ruth Sheen

  Maureen
• 
  Mona Hammond

  Hortense
• 
  Archie Panjabi

  Alsana
• 
  Bryan Dick

  Young Archie

• 
  Russell Brand

  Merlin
• 
  Christopher Simpson

  Magid/Millat
• 
  Robert Bathurst

  Marcus Malfen
• 
  Charles Collingwood

  Sir Edmund
• 
  John Simm

  Mr. Hero
• 
  Vernon Dobtcheff

  Devil of Dachau
• 
  Julian Barratt

  Aide de Camp

• 
  Philip Davis

  Archie
• 
  Paul Bhattacharjee

  Bahadur Khan
• 
  Sophie Winkleman

  Joely