Lynch first came to prominence in the 1986 Karl Francis' film Milwr Bychan playing young soldier Will Thomas.[4][5] Further film appearances include Branwen (1994), Darklands (1996), The Proposition (1997), and Y Mabinogi (2003).[6] Lynch starred in numerous television productions and series, including The Christmas Stallion (1992), The Lifeboat (1994), Tales from Pleasure Beach (2001)[6] and Hinterland/Y Gwyll.
In 2013 Lynch was awarded a Fellowship of Aberystwyth University.[3]