Name	Known for
Nia Caron Anita Anita See fewer	Glanhafren IV, Episode 7 (1992)
Lauren Phillips Kelly Kelly See fewer	Dance of the Dead (2008)
Andrew Teilo Hywel Hywel See fewer	Baker Boys (2011)
Iestyn Jones Ieuan Griffiths Ieuan Griffiths See fewer	Keeping Faith (2017)
Huw Euron Darren Darren See fewer	Pride (I) (2014)
Donna Edwards Britt Britt See fewer	Belonging (2000)
Jonathan Nefydd Colin Colin See fewer	The Way (II) (2024)
Elin Harries Dani (as Elin Lloyd Harries) Dani (as Elin Lloyd Harries) See fewer	It's My Shout: Short Films from Wales (2012)
James Wilbraham Chester (as James King) Chester (as James King) See fewer	Tom Jones (2023)
Emily John Catrin Catrin See fewer	My Policeman (2022)
Osian Morgan Aaron Aaron See fewer	Under Salt Marsh (2026)
Florence Seaman Seren Seren See fewer	Pobol y Cwm (1974)
Richard Lynch Garry Garry See fewer	The Hollow Crown (2012)
Mark Stuart Roberts Mathew Mathew See fewer	Ordinary Lies (2015)
Sue Roderick Cassie Cassie See fewer	Rebecca's Daughters (1992)
Rebecca Trehearn Cheryl Cheryl See fewer	300 (2006)
Victoria Plucknett Diane Diane See fewer	The Duchess of Duke Street (1976)
Lisa Victoria Sheryl Sheryl See fewer	Stad (2022)
Jack Quick Rhys Rhys See fewer	The One That Got Away (2024)
Sian Rivers Amanda Amanda See fewer	The Miracle Maker (1999)
Gareth Lewis Meic Meic See fewer	Hawkmoor (1978)
Dewi Rhys Dyff Dyff See fewer	Re-inventing Eddie (2002)