Sobowtór
Simon to nieśmiały młody mężczyzna. W pracy jest niedoceniany, matka go gnębi, a kobieta jego marzeń nie dostrzega. Mimo to Simon czuje, że nie jest w stanie zmienić tych rzeczy. Przybycie nowego współpracownika, Jamesa, burzy spokój mężczyzny. James jest fizycznie podobny do Simona, ale stanowi jego całkowite przeciwieństwo.
Zwiastun
Obsada
Gabrielle Downey
Strange Woman
Bruce Byron
Skinhead
Tim Key
Care Worker
Paddy Considine
'The Replicator' - Jack
Nathalie Cox
'The Replicator' - Jack's Wife
Noah Taylor
Harris
Craig Roberts
Young Detective
Andrew Gruen
Man on Train
Daniel Chapple
Executive Worker (uncredited)
Danny
Singer (uncredited)
Lukas DiSparrow
Resident (uncredited)
Natalia Warner
The Girl (uncredited)
Yasmin Paige
Melanie
James Fox
The Colonel
Sally Hawkins
Receptionist at Ball
Catherine Delaloye
Air Hostess (uncredited)
Joanna Finata
Bar Girl (uncredited)
Steve Saunders
Moaning Man on Trolley (uncredited)
Wallace Shawn
Mr. Papadopoulos
Cathy Moriarty
Kiki
Morrison Thomas
Coughing Man
Lydia Fox
Well-Dressed Woman at Ball / Test Invigilator
Chris Morris
Workers' Services Executive
Tony Rohr
Rudolph
Gemma Chan
'The Replicator' - Glamourous Judge
Jesse Eisenberg
Simon James / James Simon
Kierston Wareing
James' Funeral Date
Rade Šerbedžija
Frightening Old Man (uncredited)
Mia Wasikowska
Hannah
Kobna Holdbrook-Smith
Guard / Doctor
J. Mascis
Janitor
Kim Noble
Box Man / Guard 1
Phyllis Somerville
Simon's Mother
Susan Blommaert
Liz
Chris O'Dowd
Nurse