Clark is best known as the kilt-wearing Duncan McKay in the BBC TV series Monarch of the Glen which was set entirely in Scotland.
After growing up in Broughty Ferry, Dundee, Clark attended the University of Edinburgh.
Clark moved to London in 1995 where he pursued a full time career in acting in both dramatic and comic roles and in 1999 was cast as Duncan McKay in Monarch of the Glen.
Clark is well recognizable as the face of various advertising campaigns such as that for Vodafone and Budget Direct.
Clark was brought up in a nice house in the Broughty Ferry area of Dundee, at some remove from his great-great-grandfather, a shipwright and his wife was a jute-mill worker.