Connor Temple (36 episodes, 2007-2011)
Abby Maitland (36 episodes, 2007-2011)
James Lester (36 episodes, 2007-2011)
Helen Cutter (25 episodes, 2007-2011)
Captain Becker (23 episodes, 2009-2011)
Jenny Lewis / Claudia Brown (19 episodes, 2007-2011)
Nick Cutter (16 episodes, 2007-2009)
Matt Anderson (13 episodes, 2011)
Jess Parker (13 episodes, 2011)
Stephen Hart (13 episodes, 2007-2008)
Philip Burton (13 episodes, 2011)
Sarah Page (10 episodes, 2009)
Danny Quinn (9 episodes, 2009-2011)
Emily Merchant (9 episodes, 2011)
The Cleaner / Replica Clone (8 episodes, 2008-2009)
Oliver Leek (7 episodes, 2008)
Caroline (7 episodes, 2008)
Capt. Tom Ryan / Captain Ryan / Captain Tom Ryan (6 episodes, 2007)
Christine Johnson (6 episodes, 2009)
Gideon (5 episodes, 2011)
Ethan Dobrowski (5 episodes, 2011)
April Leonard (4 episodes, 2011)
Jack Maitland (4 episodes, 2009)
Duncan (4 episodes, 2007-2011)
Captain Wilder (4 episodes, 2009)
Tom (3 episodes, 2007)
Mick Harper (3 episodes, 2008-2009)
Tim Parker (2 episodes, 2007)
Tony (2 episodes, 2009)
Eve (2 episodes, 2009)
Captain Ross (2 episodes, 2009)
Katherine Kavanagh (2 episodes, 2009)
Andy (1 episode, 2007)
Mrs. Davis (1 episode, 2007)
Diane Johnson (1 episode, 2007)
Woman on Tube (1 episode, 2007)
Lucien (1 episode, 2008)
Young Woman 1 (1 episode, 2008)
Taylor (1 episode, 2008)
Dina (1 episode, 2008)
Small Boy (1 episode, 2007)
Jeff (1 episode, 2007)
Steve (1 episode, 2008)
Jake (1 episode, 2008)
Young Woman 2 (1 episode, 2008)
Basketball Player (1 episode, 2008)
Warren (1 episode, 2008)
ARC Technician (1 episode, 2008)
Admiral Marston (1 episode, 2011)
Dave Greene (1 episode, 2007)
Ed (1 episode, 2008)
Knight (1 episode, 2009)
Officer Sam Leonard (1 episode, 2011)
Lord Henry Merchant (1 episode, 2011)
Detective Inspector (1 episode, 2007)
Mary Trent (1 episode, 2007)
Security Guard 1 (1 episode, 2008)
Captain Marcus Yates (1 episode, 2011)
Ben Trent (1 episode, 2007)
Medic (1 episode, 2007)
Terry (1 episode, 2008)
Security Guard 2 (1 episode, 2008)
Lorraine Wickes (1 episode, 2008)
Mercenary 1 (1 episode, 2008)
Priest (1 episode, 2009)
Miss Reece (1 episode, 2011)
Submariner (1 episode, 2011)
Dr. Webster (1 episode, 2011)
Dr. Lewis (1 episode, 2007)
Jane Dexter (1 episode, 2007)
Shelley (1 episode, 2008)
Father on Beach (1 episode, 2008)
Mercenary 2 (1 episode, 2008)
Joe (1 episode, 2009)
Jimmy the Barman (1 episode, 2009)
Sir Richard (1 episode, 2009)
Moira Lennon (1 episode, 2011)
Mr. George (1 episode, 2011)
Charlotte Cameron (1 episode, 2011)
Site Foreman (1 episode, 2011)
Local Man (1 episode, 2011)
Jenna (1 episode, 2011)
Anthony (1 episode, 2011)
Valerie Irwin (1 episode, 2008)
Mr. Nagata (1 episode, 2008)
Youth on Beach (1 episode, 2008)
Duty Manager (1 episode, 2008)
Stanley Morgan (1 episode, 2009)
Marion Taylor (1 episode, 2009)
Lloyd (1 episode, 2009)
Village Boy (1 episode, 2009)
Steve (1 episode, 2011)
Michael (1 episode, 2011)
Ray Lennon (1 episode, 2011)
Tour Guide (1 episode, 2011)
Mary (1 episode, 2011)
Puppeteer (1 episode, 2011)
Peter Campbell (1 episode, 2008)
Fireman Armstrong (1 episode, 2008)
Ryan Mason (1 episode, 2009)
Chauffeur (1 episode, 2009)
Melanie (1 episode, 2009)
Randy (1 episode, 2009)
Cleaning Lady (1 episode, 2009)
Mike (1 episode, 2009)
Margaret (1 episode, 2011)
Ted (1 episode, 2011)
Darren (1 episode, 2011)
Keith (1 episode, 2011)
Doctor (1 episode, 2007)
Teacher (1 episode, 2007)
Boy 1 (1 episode, 2008)
Mini-Sub Operator (1 episode, 2008)
Firewoman Cooper (1 episode, 2008)
Mother (1 episode, 2008)
Elizabeth (1 episode, 2009)
(Young) Ryan Mason (1 episode, 2009)
Mark Baker (1 episode, 2009)
Captain (1 episode, 2009)
Beth (1 episode, 2011)
Barman (1 episode, 2011)
Lily (1 episode, 2011)
Plumber (1 episode, 2007)
Mr. West (1 episode, 2008)
Boy 2 (1 episode, 2008)
Patrick Quinn (1 episode, 2009)
Documentary Presenter (1 episode, 2009)
Neil (1 episode, 2011)
Registrar (1 episode, 2011)
Kenny Johnson (1 episode, 2008)
Fire Chief (1 episode, 2008)
Jimmy Keal (1 episode, 2009)
Boy (1 episode, 2011)
Mechanic (1 episode, 2008)
Emily (1 episode, 2009)
Mike (1 episode, 2008)
Scientist (uncredited) (4 episodes, 2007)
Paramedic / Traffic Warden (uncredited) (2 episodes, 2008-2009)
News Reporter (uncredited) (1 episode, 2008)
Abbey (uncredited) (1 episode, 2008)
Lorry Driver (uncredited) (1 episode, 2008)
Paramedic (uncredited) (1 episode, 2009)
Danny Quinns Mate (uncredited) (1 episode, 2009)
Quad bike rider (uncredited) (1 episode, 2009)
Soldier (uncredited) (1 episode, 2009)
Officer Shaw (uncredited) (1 episode, 2011)
Binman (uncredited) (1 episode, 2011)