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	The Avengers (1961)
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)
Iola Gregory Matron Matron See fewer	Cravings (2006)
Mari Rowland Hughes Carys Carys See fewer	The Proposition (1996)
Philip Brook Rhys Rhys See fewer	Coronation Street (1960)
Ian Rowlands Ieuan Ieuan See fewer	The Boy Merlin (1979)
Raymond Llewellyn Tom Tuddy (as Ray Llewellyn) Tom Tuddy (as Ray Llewellyn) See fewer	Doctor Who (1963)
Dewi Rhys Williams Mervyn Tuddy Mervyn Tuddy See fewer	Ironclad (2011)
Emelye Davies Rhian Rhian See fewer	The District Nurse (1984)