• 
  Kate Dickie

  Annie Howe
• 
  Will Attenborough

   James Lydon (3 episodes, 2015)
• 
  Doc Brown

   Lol Robinson (3 episodes, 2015)
• 
  Paul Bentall

   Jeffrey Kimball (2 episodes, 2015)
• 
  Siobhan Finneran

   Angela Purefoy (2 episodes, 2015)
• 
  Oengus MacNamara

   Denzil Joy (3 episodes, 2015)
• 
  Ania Marson

   Mrs. Joy (3 episodes, 2015)
• 
  Eileen Nicholas

   Sophie Hill (2 episodes, 2015)

• 
  David Sterne

   Cannon Dobbs / ... (2 episodes, 2015)
• 
  David Threlfall

   Huw Owen (3 episodes, 2015)
• 
  Josie Walker

   Sister Cullen (2 episodes, 2015)
• 
  Scott Wright

   Sean (2 episodes, 2015)
• 
  Nicholas Pinnock

   Bishop Mick Hunter (3 episodes, 2015)
• 
  Anna Maxwell Martin

   Merrily Watkins (3 episodes, 2015)
• 
  Rachel Atkins

   Rosemary Woodhouse (2 episodes, 2015)

• 
  Simon Trinder

   DS Frank Bliss (3 episodes, 2015)
• 
  Vivienne Soan

   Edna Reeves (2 episodes, 2015)
• 
  Stephen Walsh

   Paul Sayer (2 episodes, 2015)
• 
  Leila Mimmack

   Rowenna Napier (3 episodes, 2015)
• 
  Sally Messham

   Jane Watkins (3 episodes, 2015)