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	Hinterland (2013)
Patrick Brennan Leon Fanning Leon Fanning See fewer	Carnival Row (2019)
Dafydd Dafis Chris Thompson Chris Thompson See fewer	Pen Talar (2010)
Alan Downer Returning Officer (as Alan Towner) Returning Officer (as Alan Towner) See fewer	Triton (1968)
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)
Nia Trussler Jones Journalist (as Nia Trussler) Journalist (as Nia Trussler) See fewer	Why Didn't They Ask Evans? (2022)
Sigerson Kelly Aidan Devereaux Aidan Devereaux See fewer	County Kilburn (2000)
Jenny Livsey Lauren James Lauren James See fewer	Keeping Faith (2017)
Simon Ludders Journalist Journalist See fewer	Miss Scarlet & the Duke (2020)
Catrin Powell Karen Paterson Karen Paterson See fewer	Torchwood: Monthly Range (2015)
John Rhys-Davies Tim Hallam Tim Hallam See fewer	The Lord of the Rings: The Return of the King (2003)
David Robb Fergus Fergus See fewer	Downton Abbey (2010)
Menna Trussler Annie Lloyd Annie Lloyd See fewer	Pride (I) (2014)
Ali Yassine Journalist Journalist See fewer	The Fifth Element (1997)