Name	Known for
Keith Allen Jack Denby Jack Denby See fewer	The Others (2001)
Anthony Booth Alan Hamilton Alan Hamilton See fewer	Corruption (1968)
Siobhan Flynn Lisa Lisa See fewer	The Island (2005)
Eluned Jones Marjorie Haines Marjorie Haines See fewer	The Dark (2005)
Miranda Llewellyn-Jenkins Katie Katie See fewer	Crusade in Jeans (2006)
Ruth Madoc Jean Pryce Jean Pryce See fewer	Fiddler on the Roof (1971)
Kevin McCurdy Tony Tony See fewer	John Carter (2012)
Geraint Morgan Eric Eric See fewer	Hinterland (2013)
Anna Mountford Suzanne Pryce Suzanne Pryce See fewer	Prime Suspect: The Last Witness (2003)
Lucy Quick Receptionist Receptionist See fewer	Kommando 1944 (2018)
Peter Roberts Mark Mark See fewer	Jack of Hearts (1999)
Andrew Sachs Peter Pryce Peter Pryce See fewer	Fawlty Towers (1975)
Stephen Scott Solicitor Solicitor See fewer	Jack of Hearts (1999)
Kerry Joy Stewart Janice Janice See fewer	King Arthur: Excalibur Rising (2017)
Nicky Thompson Registrar Registrar See fewer	A Mind to Kill (1994)
Steve Toussaint Joe Joe See fewer	House of the Dragon (2022)
Melanie Walters Sylvie Sylvie See fewer	Submarine (2010)
Rhian Williams Shan Cothi Shan Cothi See fewer	Jack of Hearts (1999)