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)
Christine Pollon Dilys Humphries Dilys Humphries See fewer	The Avengers (1961)
Jack Walters 'Captain' Mansel 'Captain' Mansel See fewer	The Englishman Who Went Up a Hill But Came Down a Mountain (1995)
Iris Jones Irene Wynne-Lewis Irene Wynne-Lewis See fewer	Cameleon (1997)
Vivienne Burgess Lucy Rees Lucy Rees See fewer	Gazette (1968)
Aimée Delamain Emily Rees (as Aimee Delamain) Emily Rees (as Aimee Delamain) See fewer	High Spirits (1988)
Grey Evans Deacon Davies Deacon Davies See fewer	Hedd Wyn (1992)
Eleanor Thomas Mrs. Deacon Davies Mrs. Deacon Davies See fewer	The District Nurse (1984)
Alun ap Brinley Police Constable Police Constable See fewer	The Indian Doctor (2010)
Siwan Bowen Davies Gwyneth Gwyneth See fewer	Alys (2011)
Jâms Thomas Billy Williams Billy Williams See fewer	Pride (I) (2014)