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)
Jack Walters 'Captain' Mansel 'Captain' Mansel See fewer	The Englishman Who Went Up a Hill But Came Down a Mountain (1995)
Carol Holmes Marie Anderson Marie Anderson See fewer	Milk & Money (1996)
Owen Garmon R.T. Williams R.T. Williams See fewer	The Proposition (1996)
Marged Esli Edith Turner Edith Turner See fewer	Very Annie Mary (2001)
Gilbert Wynne Morris Turner Morris Turner See fewer	The Duchess (2008)
Alan Devlin Father O'Brian Father O'Brian See fewer	Leap Year (2010)
Gavin Cunningham Raymond Turner Raymond Turner See fewer	The District Nurse (1984)
Anna Linstrum Phyllis Turner (as Anna Linstrom) Phyllis Turner (as Anna Linstrom) See fewer	Dramarama (1983)
Richard Harrington Donald Turner Donald Turner See fewer	Hinterland (2013)
Rosemary Martin Constance Latimer Constance Latimer See fewer	Tess (1979)
Wendy Williams Grace Pemberton Grace Pemberton See fewer	Jack the Ripper (1973)
David Garfield Noah Rees Noah Rees See fewer	Lorna Doone (1976)
Lisabeth Miles Mary Elias Mary Elias See fewer	The Life and Times of David Lloyd George (1981)
Jan Edwards Rosita May Rosita May See fewer	The Wednesday Play (1964)
Melanie Walters Milwen Parry Milwen Parry See fewer	Submarine (2010)