Cillian Murphy as Jim

Naomie Harris as Selena

Brendan Gleeson as Frank

Megan Burns as Hannah

Christopher Eccleston as Major Henry West

Noah Huntley as Mark

Luke Mably as Private Clifton

Stuart McQuarrie as Seargent Farrell

Ricci Harnett as Corporal Mitchell

Leo Bill as Private Jones

Junior Laniyan as Private Bell

Ray Panthaki as Private Bedford

Sanjay Rambaruth as Private Davis

Marvin Campbell as Private Mailer

Christopher Dunne as Jim's Father

Emma Hitching as Jim's Mother

Alex Palmer as Activist

Bindu De Stoppani as Activist

Jukka Hiltunen as Activist

David Schneider as Scientist

Alexander Delamere as Mr. Bridges

Kim McGarrity as Mr. Bridges' Daughter

Toby Sedgwick as Infected Priest

Justin Hackney as Infected Kid

Adrian Christopher as Featured Infected

Richard Dwyer as Featured Infected

Nick Ewans as Featured Infected

Terry John as Featured Infected

Paul Kasey as Featured Infected

Sebastian Knapp as Featured Infected

Nicholas James Lewis as Featured Infected

Jenni Lush as Featured Infected

Tristan Matthiae as Featured Infected

Jeffrey Rann as Featured Infected

Joelle Simpson as Featured Infected

Al Stokes as Featured Infected

Steen Young as Featured Infected