Caity Lotz as Ava

Toby Stephens as Vincent McCarthy

Denis Lawson as Thomson

Sam Hazeldine as James

Pooneh Hajimohammadi as Suri

Jonathan Byrne as Tim

Jade Croot as Mary

John-Paul Macleod as Paul Dawson (as John Paul Macleod)

Helen Griffin as Paul Dawson's Mother

Siwan Morris as Lucy

Nicola Reynolds as Joan

Alan Low as Assassin

Sule Rimi as Dr. Giwa-Amu

Joshua Higgott as Assistant (Dr. James)

Giles Thomas as Dr. Henning

Cornelius Garrett as Doctor GP

Sam Ellis as Surgeon

Richard Shackley as Checkpoint Guard

Daniel Llewelyn-Williams as Squadron Commander

Dafydd Emyr as Armed Military Policeman

Ben McGregor as Implant Soldier Ben

Clark Fisher as Implant Soldier Clark

Gareth Jones as Implant Soldier Ryan

Paul James as Doctor (on computer screen)

Lee Nicholas Harris as Implant Soldier Harris

Stuart Matthews as Soldier