Name	Known for
Martin Clunes Nathan Williams Nathan Williams See fewer	Doc Martin (2004)
Louis Ashbourne Serkis Johnny Williams Johnny Williams See fewer	Out There (I) (2025)
Mark Lewis Jones Caleb Williams Caleb Williams See fewer	Gangs of London (2020)
Natalia Kostrzewa Eva Bartosz Eva Bartosz See fewer	Black Mirror (2011)
Carly-Sophia Davies Sadie Sadie See fewer	The Eternal Daughter (2022)
Gerran Howell Rhys Rhys See fewer	The Pitt (2025)
Michael Obiora Scott Foley Scott Foley See fewer	Luther (2010)
Marcin Zarzeczny Pavel Pavel See fewer	The Agency: Central Intelligence (2024)
Cat Simmons Robyn Robyn See fewer	The Holiday (2021)
Michael Elwyn Owen Thomas Owen Thomas See fewer	Piece of Cake (1988)
Waj Ali Khalad Rogan Khalad Rogan See fewer	Carnival Row (2019)
Amy Griffiths Meg Roberts Meg Roberts See fewer	The Princess Switch (2018)
David Broughton-Davies Gareth Gareth See fewer	Frequencies (2013)
Gwen Ellis Doris Doris See fewer	Hedd Wyn (1992)
Aneirin Hughes Nigel Hughes Nigel Hughes See fewer	Cameleon (1997)
Philip Howe Ronnie Burke Ronnie Burke See fewer	Bryn (2020)
Sharon Morgan Gwen Thomas Gwen Thomas See fewer	Apostle (2018)
Eiry Thomas PC Jane Crowther PC Jane Crowther See fewer	Enid a Lucy (2019)
Nicholas Page Hayman Driver (uncredited) Driver (uncredited) See fewer	Patriot Games (1992)