In 2005, Martin was given a small role in the British film Cashback (2006), written and directed by Sean Ellis, which starred, among others, Sean Biggerstaff from the Harry Potter films. This appearance led to further small roles in films, including playing an 'Escort' in the British film Heroes and Villains (2006).
Martin then followed this with a featured Zombie Creature role, in the short horror film Gasoline Blood (2006). Written and directed by David Pope, this was followed up by him playing various 'Trollesunds' in the Nicole Kidman & Daniel Craig fantasy movie: The Golden Compass (2007) written by 'Phillip Pullman' and directed by Chris Weitz.
Martin then went onto work on the Matt Damon film, The Bourne Ultimatum (2007) which is the third film in the 'Bourne' series of films. Some small television roles followed, in particular the new 'Stephen Fry' series Kingdom (2009) (TV) which is filmed in his home county of Norfolk.
Martin then went onto work on the new Batman film : The Dark Knight (2008) in which he plays one of the Joker's Henchman, alongside the late Heath Ledger. This film was again directed by Christopher Nolan who also wrote it along with his brother Jonathan Nolan.
Martin then went onto work on the second series of Kingdom (2009) (TV), in which he plays 'Jason'.
After having worked with Warner Bros on the The Dark Knight (2008) they requested him for the new Harry Potter film: Harry Potter and the Half-Blood Prince (2009), in this film he plays a character called 'Scary Face'.
Martin then worked on the third series of Kingdom (2009) (TV) in which he reprised his role as 'Jason'.
He then worked on Harry Potter and the Deathly Hallows (part 1), in this film he played Mundungus Fletcher's friend, opposite Andy Linden (Mundungus Fletcher).
After this film, Martin decided to work on his own projects including: Logg Time, Z-Lister, Z-Listers and Ticketer, all of which he wrote and co-directed two.
Martin has continued to appear in mainstream movies and television including the latest Jason Bourne film, the Star Wars TV series 'Obi Wan Kenobi' and the latest Indiana Jones Movie, Dial of Destiny.