Andrea Riseborough
Colette McVeigh
Clive Owen
Mac
Gillian Anderson
Kate Fletcher
Aidan Gillen
Gerry
Domhnall Gleeson
Connor
Brid Brennan
Ma
David Wilmot
Kevin Mulville
Stuart Graham
Ian Gilmour
Martin McCann
Brendan
Maria Laird
Young Collette
Barry Barnes
Gerry Senior
Michael McElhatton
Liam Hughes
Gary Lydon
Geoff
Daniel Tatarsky
Watcher
Tom Bennett
Watcher #2
Nicholas Asbury
Agent
Morgan Watkins
MI5 Officer
Karl Shiels
Mulville's Driver / Gunman
Mark Huberman
RUC Officer at Hospital
Ronnie McCann
RUC Constable
Eoin Murtagh
Louie, Fletcher's Son
Alan Devine
Social Club Barman
Ben Smyth
Sean
Nia Gwynne
Female Watcher
Cathal Maguire
Mark
Ian Patterson
News Reporter
Alan O'Neill
RUC Officer
David Herlihy
Senior Staff Officer
Frank Smith
Henderson
Kate Nic Chonaonaigh
Henderson's Wife
Lisa Walsh
Brendan's Girlfriend
Una Carroll
Brendan's Mum
James Greene
British Soldier (uncredited)
Anna Elizabeth McGrath
Mourner (uncredited)
Anne Brogan
Bridget