Among Smith's other early roles are Holby City, Goodnight Mister Tom and Second Sight.
He played Luke in the 2006 Doctor Who episode "School Reunion" and Joey Frazier in BBC's Hustle.
He played Jack in the BBC's Sherlock Holmes and the Baker Street Irregulars (2007).
In 2010 he was the main character in episode 2 of the Jimmy McGovern-penned BBC drama serial Accused, where he played Frankie, a young soldier who seeks revenge on an army corporal after his friend commits suicide due to the corporal's actions.
[1] In the following few years, Smith had roles in Scott & Bailey, The Honourable Woman and Common, also written by Jimmy McGovern.