Name	Known for
Nerys Hughes Megan Roberts Megan Roberts See fewer	The Liver Birds (1969)
Freddie Jones Dr. Emlyn Isaacs Dr. Emlyn Isaacs See fewer	Dune (1984)
Nicholas Jones Dr. James Isaacs Dr. James Isaacs See fewer	In the Heart of the Sea (2015)
Janet Aethwy Ruth Jones Ruth Jones See fewer	Patagonia (2010)
Allin Elidyr John Evans (as Alun Elidyr) John Evans (as Alun Elidyr) See fewer	Branwen (1995)
Owen Garmon R.T. Williams R.T. Williams See fewer	The Proposition (1996)
Iola Gregory Matron Matron See fewer	Cravings (2006)
Jonathan Hackett Foreman Foreman See fewer	Breaking the Waves (1996)
Carol Holmes Marie Anderson Marie Anderson See fewer	Milk & Money (1996)
Rhys Howlett Gareth Evans Gareth Evans See fewer	The District Nurse (1984)
Andy Rivers Jed Daniels Jed Daniels See fewer	The District Nurse (1984)
Phil Rowlands Means Test Official (as Philip Rowlands) Means Test Official (as Philip Rowlands) See fewer	Star Cops (1987)
Dorien Thomas Owen Morris Owen Morris See fewer	Twin Town (1997)
Tara Ward Olivia Gill Olivia Gill See fewer	Justice League (2017)
Gordon Whiting Ambrose Gill Ambrose Gill See fewer	The Adventures of Robin Hood (1955)
Sera Williams Mavis Evans Mavis Evans See fewer	The District Nurse (1984)