Eddie Redmayne

Character: Alex Forbes

Tom Sturridge

Character: Nigel Colbie

Toni Collette

Character: Sally

Richard Roxburgh

Character: McKenzie

Kate Maberly

Character: Susan Mueller

Jonathan Overton

Character: Josh

Amit Shah

Character: Raj Mehta

David Threlfall

Character: John Colbie

Cathryn Bradshaw

Character: Helen Colbie

Patrick Malahide

Character: Headmaster

Hugh Sachs

Character: Rev Donaldson

Liam McKenna

Character: Mr Fergus

Bryan Robson

Character: Mr Evans

Paul Sonkkila

Character: Police Bureaucrat

Craig Crosbie

Character: Coroner

Paul Blackwell

Character: Geoff Burns

Jordan Prosser

Character: Boy on Train