Name	Known for
Steffan Rhodri Geoff Geoff See fewer	Submarine (2010)
Mali Harries Dee Dee See fewer	Leap Year (2010)
Sophie Melville Thea Thea See fewer	The Pact (I) (2021)
Callum Scott Howells Owen Owen See fewer	It's a Sin (2021)
Maja Laskowska Anna Anna See fewer	FBI: International (2021)
Aneurin Barnard Dan Dan See fewer	Dunkirk (2017)
Tom Cullen Jack Price Jack Price See fewer	Weekend (II) (2011)
Mark Lewis Jones Glynn Glynn See fewer	Gangs of London (2020)
Michael Sheen Denny Driscoll Denny Driscoll See fewer	Masters of Sex (2013)
Simon Armstrong Alwyn Jeffries Alwyn Jeffries See fewer	Killer Elite (2011)
Kezrena James Dr. Aimee Goff Dr. Aimee Goff See fewer	Torchwood: The Story Continues (2017)
Teilo James Le Masurier Rhys Driscoll (as Teilo Le Masurier) Rhys Driscoll (as Teilo Le Masurier) See fewer	The Way (II) (2024)
Leila Navabi Sunita Sunita See fewer	Vandullz (2021)
Gillian Elisa Heledd Heledd See fewer	Sherlock (2010)
David K.S. Tse Mr. Kwan Mr. Kwan See fewer	Lara Croft: Tomb Raider (2001)
Jonathan Nefydd Simon the Prophet Simon the Prophet See fewer	The Way (II) (2024)
Sam Locke PC Ryan PC Ryan See fewer	28 Years Later (2025)
Alan David Rhodri Rhodri See fewer	The Painted Veil (2006)
Matthew Aubrey Neil Griffiths Neil Griffiths See fewer	Made in Dagenham (2010)
Andria Doherty Grace Grace See fewer	It's a Sin (2021)
Dylan Jones Student Student See fewer	The Light in the Hall (2022)
Kyle Rees Warehouse Worker Warehouse Worker See fewer	Pride (I) (2014)
Darren Lawrence Mick Walden Mick Walden See fewer	Nuts and Bolts (2000)
Nicholas McGaughey Superintendent Superintendent See fewer	From Hell (2001)
Lloyd Everitt Gordius Senior Officer Gordius Senior Officer See fewer	Alien: Earth (2025)
Derek Hutchinson Phillip Haynes Phillip Haynes See fewer	V for Vendetta (2005)
Caroline Berry Margaret Haynes Margaret Haynes See fewer	The Feast (2021)
Dorian Simpson Scout Scout See fewer	Hoodies vs. Hooligans (2014)
Nigel Hastings Army Commander Army Commander See fewer	Four Weddings and a Funeral (1994)