Name	Known for
Sian Reese-Williams DCI Cadi John DCI Cadi John See fewer	Hidden (2018)
Sion Alun Davies DS Owen Vaughan (as Siôn Alun Davies) DS Owen Vaughan (as Siôn Alun Davies) See fewer	Hidden (2018)
Annes Elwy Mia Owen Mia Owen See fewer	Little Women (2017)
Steffan Cennydd Connor Pritchard Connor Pritchard See fewer	The Pembrokeshire Murders (2021)
Sion Eifion Lee Williams Lee Williams See fewer	Hidden (2018)
Nia Roberts Elin Jones Elin Jones See fewer	Cashback (2006)
Lowri Izzard PC Mari James PC Mari James See fewer	Hidden (2018)
Garmon Rhys PC Ryan Davies PC Ryan Davies See fewer	Hidden (2018)
Victoria Pugh DSI Susan Lynn DSI Susan Lynn See fewer	Torchwood (2006)
Bryn Fôn Hefin Mathews Hefin Mathews See fewer	The Corn Is Green (1979)
Lois Elenid Beca Mathews Beca Mathews See fewer	Hidden (2018)
Owain Gwynn Siôn Wells Siôn Wells See fewer	Apostle (2018)
Lisa Victoria Catrin Pritchard Catrin Pritchard See fewer	Hidden (2018)
Ffion Dafis Kelly Owen Kelly Owen See fewer	Hidden (2018)
Dyfrig Evans Glyn Jones Glyn Jones See fewer	Hidden (2018)
Jac Jones Liam Pritchard Liam Pritchard See fewer	Hidden (2018)
Manon Prysor Rhian Jenkins Rhian Jenkins See fewer	Hidden (2018)
Gruffydd Owain Wyn Jones Jason Williams (as Gruffydd Wyn Jones) Jason Williams (as Gruffydd Wyn Jones) See fewer	Hidden (2018)
Mark Flanagan Karl Lewis (as Mark Robert-Flanagan) Karl Lewis (as Mark Robert-Flanagan) See fewer	Hidden (2018)
Megan Llyn Bethan John (as Megan Llyn Parri) Bethan John (as Megan Llyn Parri) See fewer	Hidden (2018)
Nia Hâf Lois Jones Lois Jones See fewer	Hidden (2018)
Llion Williams Ifan Jenkins Ifan Jenkins See fewer	Itopia (2022)
Gwyn Vaughan Jones Minister Minister See fewer	Torchwood (2006)
Melangell Dolma Sam Shepherd Sam Shepherd See fewer	Hidden (2018)
Lois Meleri Jones Lowri Driscoll (as Lois Meleri-Jones) Lowri Driscoll (as Lois Meleri-Jones) See fewer	Dal Y Mellt (2022)
Brooke Morgan Baby Baby See fewer	Hidden (2018)
Tony Atherton Shopper (uncredited) Shopper (uncredited) See fewer	The Crown (2016)
Paul Whitlock Roy (uncredited) Roy (uncredited) See fewer	The Real Prime Suspect (2019)