Career: Smith first made a name for himself in a small indie film Hate Crime. He played a gay man, who was a victim of intolerance at the hands of a son of a fundamentalist preacher. Smith has starred in two other films: The War Boys and Red Hook. He has also appeared in TV shows including Law & Order in 2009 and Agatha Christie's Poirot: Murder on the Orient Express. He has also performed in several theatre productions, including the Broadway play Come Back, Little Sheba. The role he is best known for is that of Lt Matthew Scott in the military science fiction series SGU: Stargate Universe, which blasted onto the small screen in 2009. Smith reappeared on ITV over Christmas 2010 in Agatha Christie's Poirot. He has made guest appearances in a number of American shows since then.

Career: Carlyle co-founded the Raindog theatre group in Glasgow in 1990 and his big break came in the same year when director Ken Loach cast him in the film Riff-Raff. Four years later, he won a Scottish Bafta for his performance as murderer Albie Kinsella in a three-part episode of Cracker. The lead role in Hamish Macbeth followed in 1995. He caught Hollywood's attention after appearing in Trainspotting and The Full Monty. He has also starred in Plunkett and Macleane, Angela's Ashes, The Beach, Bond film The World Is Not Enough, and The 51st State, as well as 28 Weeks Later.