Name	Known for
Robert Pugh Connor White Connor White See fewer	The Ghost Writer (2010)
Nia Roberts Helen Morrison Helen Morrison See fewer	Cashback (2006)
Richard Lynch Richard Williams Richard Williams See fewer	The Hollow Crown (2012)
Mali Harries Elen James Elen James See fewer	Leap Year (2010)
Gillian Elisa Tina Martin Tina Martin See fewer	Sherlock (2010)
David Robb Fergus Fergus See fewer	Downton Abbey (2010)
Patrick Brennan Leon Fanning Leon Fanning See fewer	Carnival Row (2019)
Dafydd Dafis Chris Thompson Chris Thompson See fewer	Pen Talar (2010)
Orla Fitzgerald Mairead Devereaux Mairead Devereaux See fewer	The Wind that Shakes the Barley (2006)
Dafydd Hywel Griff James Griff James See fewer	Off to Philadelphia in the Morning (1978)
Sigerson Kelly Aidan Devereaux Aidan Devereaux See fewer	County Kilburn (2000)
Jenny Livsey Lauren James Lauren James See fewer	Keeping Faith (2017)
Catrin Powell Karen Paterson Karen Paterson See fewer	Torchwood: Monthly Range (2015)
Menna Trussler Annie Lloyd Annie Lloyd See fewer	Pride (I) (2014)