Dr. Prem Sharma (15 episodes, 2010-2013)
Kamini Sharma (15 episodes, 2010-2013)
Dan Griffiths (15 episodes, 2010-2013)
Megan Evans (15 episodes, 2010-2013)
Owen Griffiths (15 episodes, 2010-2013)
Sian Davies (14 episodes, 2010-2013)
Sgt. Emlyn Dawkins / PC Emlyn Dorking / Sgt. Emlyn Griffitha (12 episodes, 2010-2013)
Ceri Joseph (11 episodes, 2010-2013)
Gina Nicolli / Gina Niccoli (10 episodes, 2010-2012)
Miner / Harri (10 episodes, 2010-2012)
Richard Sharpe (5 episodes, 2010)
Sylvia Sharpe (5 episodes, 2010)
Pushpa Bakshi (5 episodes, 2012)
Tom Evans (5 episodes, 2010)
Verity Todd (5 episodes, 2012)
Herbert Todd / Rev. Herbert Todd / Rev Herbert Todd (5 episodes, 2012)
Mary Lewis (5 episodes, 2012)
Dafydd Lewis (5 episodes, 2012)
Basil Thomas (5 episodes, 2013)
Graham (5 episodes, 2013)
Aled / Aled Williams (5 episodes, 2013)
Daf Jones / Daf (5 episodes, 2013)
Robert Thomas (5 episodes, 2013)
Mrs. Williams (4 episodes, 2013)
Miner (4 episodes, 2013)
Alun / Mining Engineer (4 episodes, 2010-2013)
Mrs. Daniels (4 episodes, 2013)
Mrs. Germin (3 episodes, 2013)
Bryn (3 episodes, 2010)
Beryl (3 episodes, 2010-2012)
Carwyn Rogers (2 episodes, 2012)
Trystan (2 episodes, 2010)
Meinir Rogers (2 episodes, 2012)
Burly Man / Wyn (2 episodes, 2010-2012)
Julie (2 episodes, 2013)
Rhys Stephens (1 episode, 2010)
Esther Adams (1 episode, 2012)
Whipper In (1 episode, 2010)
Bronwen (1 episode, 2010)
Elaine (1 episode, 2010)
Rhys (1 episode, 2012)
Rhodri (1 episode, 2010)
Tonya (1 episode, 2013)
Dafydd Lewis (1 episode, 2010)
PC Jones (1 episode, 2012)
Branwen (1 episode, 2013)
Aled (1 episode, 2010)
Cate (1 episode, 2010)
Card Player (1 episode, 2012)
Morgan Rowlands (1 episode, 2013)
Delivery man (1 episode, 2012)
Bentley (1 episode, 2013)
Heavy (1 episode, 2013)
Police Constable (uncredited) (2 episodes, 2010-2013)
Miner (uncredited) (1 episode, 2010)