Jesse Eisenberg

Simon James / James Simon

Acting

Mia Wasikowska

Hannah

Acting

Wallace Shawn

Mr. Papadopoulos

Acting

Yasmin Paige

Melanie

Acting

Noah Taylor

Harris

Acting

James Fox

The Colonel

Acting

Cathy Moriarty

Kiki

Acting

Phyllis Somerville

Simon's Mother

Acting

Gabrielle Downey

Strange Woman

Acting

Jon Korkes

Detective

Acting

Craig Roberts

Young Detective

Acting

Kobna Holdbrook-Smith

Guard / Doctor

Acting

Susan Blommaert

Liz

Acting

Bruce Byron

Skinhead

Acting

J. Mascis

Janitor

Acting

Tony Rohr

Rudolph

Acting

Karima Riachy

Secretary

Acting

Tim Key

Care Worker

Acting

Andrew Gruen

Man on Train

Acting

Kim Noble

Box Man / Guard 1

Acting

Morrison Thomas

Coughing Man

Acting

Sally Hawkins

Receptionist at Ball

Acting

Lloyd Woolf

Investigator

Writing

Lydia Fox

Well-Dressed Woman at Ball / Test Invigilator

Acting

Stuart Silver

Waiter / 'The Replicator' - Guard 2

Acting

Chris Morris

Workers' Services Executive

Acting

Chris O'Dowd

Nurse

Acting

Donal Cox

Priest

Acting

Kierston Wareing

James' Funeral Date

Acting

Paddy Considine

'The Replicator' - Jack

Acting

Dirk Van Der Gert

'The Replicator' - Head Judge

Acting

Liam Bewley

'The Replicator' - Wise Judge

Acting

Gemma Chan

'The Replicator' - Glamourous Judge

Acting

Nathalie Cox

'The Replicator' - Jack's Wife

Acting

Daniel Chapple

Executive Worker (uncredited)

Acting

Martin Crossingham

Paramedic (uncredited)

Acting

Danny

Singer (uncredited)

Acting

Catherine Delaloye

Air Hostess (uncredited)

Acting

Lukas DiSparrow

Resident (uncredited)

Acting

Joanna Finata

Bar Girl (uncredited)

Acting

Jeanie Gold

Waitress (uncredited)

Acting

Steve Saunders

Moaning Man on Trolley (uncredited)

Acting

Rade Šerbedžija

Frightening Old Man (uncredited)

Acting

Natalia Warner

The Girl (uncredited)

Acting