Name	Known for
Richard Harrington DCI Tom Mathias DCI Tom Mathias See fewer	Hinterland (2013)
Mali Harries DI Mared Rhys DI Mared Rhys See fewer	Leap Year (2010)
Alex Harries DC Lloyd Ellis DC Lloyd Ellis See fewer	Keeping Faith (2017)
Hannah Daniel DS Sian Owen DS Sian Owen See fewer	Hinterland (2013)
Aneirin Hughes Chief Supt Brian Prosser Chief Supt Brian Prosser See fewer	Cameleon (1997)
Anamaria Marinca Meg Mathias Meg Mathias See fewer	4 Months, 3 Weeks and 2 Days (2007)
Mark Lewis Jones John Bell John Bell See fewer	Gangs of London (2020)
Tom Rhys Harries Gary Pearce Gary Pearce See fewer	White Lines (2020)
Gwenno Hodgkins Elen Prosser Elen Prosser See fewer	Re-inventing Eddie (2002)
John Pierce Jones Endaf Jones Endaf Jones See fewer	Brazil (1985)
Richard Elfyn IPCC Investigator IPCC Investigator See fewer	Apostle (2018)
Ioan Hefin Philip Hopkins Philip Hopkins See fewer	Gangs of London (2020)
Morfudd Hughes Judith Hopkins Judith Hopkins See fewer	Hidden (2018)
Rhys Bidder Dion Hopkins Dion Hopkins See fewer	Emmerdale Farm (1972)
Sion Daniel Young Morgan Hopkins (as Sion Young) Morgan Hopkins (as Sion Young) See fewer	Private Peaceful (2012)
Andy Sheldon Geraint Hopkins Geraint Hopkins See fewer	An American Summer (1990)
Manon Wilkinson Kelsey Probert Kelsey Probert See fewer	Hidden (2018)
Gareth Potter Slaughterhouse Worker Slaughterhouse Worker See fewer	The Tempest (IV) (2010)