Name	Known for
Judi Jones Margaret Mathias Margaret Mathias See fewer	Life on Mars (2006)
Gareth Bryn Simon Richards Simon Richards See fewer	Karen Pirie (2022)
Matthew Gravelle Gareth Thomas Gareth Thomas See fewer	Broadchurch (2013)
Taylor Jones Natalie Natalie See fewer	Screen One (1985)
Anita Reynolds Nita Jones5 Nita Jones5 See fewer	I Used to Be Famous (2022)
Roger Evans Hugh Evans Hugh Evans See fewer	House of the Dragon (2022)
Phaldut Sharma Ranjit Singh (as Paul Sharma) Ranjit Singh (as Paul Sharma) See fewer	Gravity (2013)
Mark Lewis Jones Des Davies Des Davies See fewer	Gangs of London (2020)
Lesley Vickerage Katharine Tyrell Katharine Tyrell See fewer	Moonfleet (2013)
Lisa Palfrey Jules Bowen Jules Bowen See fewer	Guest House Paradiso (1999)
Eluned Jones Val Sullivan Val Sullivan See fewer	The Dark (2005)
David Rees Talbot Mal Rees Mal Rees See fewer	Father Brown (2013)
Steffan Rhodri Rev. Llewelyn Rev. Llewelyn See fewer	Submarine (2010)
Brian Hibbard Ralph Jenkins Ralph Jenkins See fewer	Revolver (2005)
Eiry Thomas Cheryl Cates Cheryl Cates See fewer	The Bench (2001)
Martin Cole Wayne Hayward Wayne Hayward See fewer	Mile High (2003)
Owen Garmon Clive Edwards Clive Edwards See fewer	The Proposition (1996)
Steve Hickman Andy Weston Andy Weston See fewer	The Bench (2001)
Michael Povey Mr. Meadows (as Meic Povey) Mr. Meadows (as Meic Povey) See fewer	A Mind to Kill (1994)
Philip McGough Peter Mansell Peter Mansell See fewer	Les Misérables (1998)
Sue Jones-Davies Grace Mansell (as Sue Jones Davies) Grace Mansell (as Sue Jones Davies) See fewer	Monty Python's Life of Brian (1979)
Scott Bailey Mark Hall Mark Hall See fewer	Torchwood (2006)
Duncan Bett Eric Hughes Eric Hughes See fewer	Happy Hours (2013)
Angela Brinkworth Elsie Royston Elsie Royston See fewer	The Bench (2001)
Andy Hockley Harry Richards Harry Richards See fewer	Much Ado About Nothing (1993)
Dafydd Hywel Wynford Thomas Wynford Thomas See fewer	Miss Peregrine's Home for Peculiar Children (2016)
Iestyn Jones Ray Hubbard Ray Hubbard See fewer	Keeping Faith (2017)
Pamela Merrick Fran Hall Fran Hall See fewer	Jacob's Ladder (2003)
Gareth Morris Gwil Hall Gwil Hall See fewer	Y Palmant Aur (1996)
Simon Nehan Karl Richards Karl Richards See fewer	Made in Dagenham (2010)
Ian Saynor Charles Prys Fychan Charles Prys Fychan See fewer	Doctor Who (1963)
Steve Speirs Ron Hubbard Ron Hubbard See fewer	Star Wars: Episode I - The Phantom Menace (1999)
Kerry Joy Stewart Sandra Dewick Sandra Dewick See fewer	King Arthur: Excalibur Rising (2017)