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)
Christine Pollon Dilys Humphries Dilys Humphries See fewer	Romeo and Juliet (1962)
Janet Aethwy Ruth Jones Ruth Jones See fewer	Patagonia (2010)
Ray Smith Rev Griffiths Rev Griffiths See fewer	The Old Devils (1992)
Juliet Waley Mrs. Griffiths Mrs. Griffiths See fewer	Jane Eyre (1973)
Jack Walters 'Captain' Mansel 'Captain' Mansel See fewer	The Englishman Who Went Up a Hill But Came Down a Mountain (1995)
Iola Gregory Matron Matron See fewer	Cravings (2006)
Carol Holmes Marie Anderson Marie Anderson See fewer	Milk & Money (1996)
Owen Garmon R.T. Williams R.T. Williams See fewer	The Proposition (1996)
Cadfan Roberts Dai Davies Dai Davies See fewer	Human Traffic (1999)
Delyth Wyn Lily Davies Lily Davies See fewer	Yr Amgueddfa (2021)
Louisa Morgan Gwen Gwen See fewer	Coming Up Roses (1986)
Simon Baker Joe Joe See fewer	The District Nurse (1984)
Philippa Davies Mrs. Evans Mrs. Evans See fewer	Prick Up Your Ears (1987)