• 
  Ciarán Hinds

  DCS James Langton
• 
  Shaun Dingwall

  DCI Mike Lewis
• 
  Jack Fortune

   Mr. Delany (3 episodes, 2012)
• 
  Leo Gregory

  Lester James
• 
  Michelle Holmes

  DC Barbara Maddox
• 
  Celyn Jones

  DS Paul Barolli
• 
  Ray MacAllan

  Tony James
• 
  Kelly Reilly

  DI Anna Travis

• 
  Michael Simkins

   Deputy Commissioner Walters (2 episodes, 2012)
• 
  Sara Stewart

   Andrea Lesser (3 episodes, 2012)
• 
  Simon Treves

   Mr. Thompson / ... (2 episodes, 2012)
• 
  Lucy Whybrow

   Mrs. Delany (3 episodes, 2012)
• 
  Tom Wisdom

  Scott Myers
• 
  Darach Ó Dúbháin

  Sean O'Dell
• 
  Geoff Bell

  Harry James

• 
  Amanda Lawrence

  DC Joan Faulkland
• 
  William Miller

  Rupert Mitchell
• 
  Bryony Hannah

   Felicity Turner (3 episodes, 2012)
• 
  Samantha Coughlan

   Helen Mitchell (2 episodes, 2012)
• 
  Kate O'Flynn

   Jeannie Bale / ... (3 episodes, 2012)
• 
  Alex Price

  Dan Hutchins
• 
  Joanna Vanderham

   Amanda Delany (3 episodes, 2012)
• 
  Christopher Longman

   Detective (2 episodes, 2012)
• 
  Thusitha Jayasundera

   Veronica Malins (5 episodes, 2009-2012)