He is best known for his role as John Graves Simcoe in the series, Turn: Washington's Spies and Simon "Ghost" Riley in Call of Duty: Modern Warfare II and Call of Duty: Modern Warfare III.

He goes back to the school to give acting workshops to pupils involved in drama and English.

Roukin starred in the 2008 film Happy-Go-Lucky as the love interest of the main character, Poppy (played by Sally Hawkins).

ITV's two-part drama pilot for the television series DCI Banks had Roukin portraying one half of a serial killing couple.

[2] He played Bagot in Richard II, part of the cultural Olympiad of Shakespeare, directed by Rupert Goold and produced by Sam Mendes for BBC2 and NBC.