Film:
* The Dark Knight (2008): Played the role of The Joker (uncredited)
* The Hitchhiker's Guide to the Galaxy (2005): Played the role of The Vogon Captain
* The Illusionist (2006): Played the role of The Inspector
* The Descent (2005): Played the role of Paul
* The Last Days of Disco (1998): Played the role of Tony
* Waking Ned Devine (1998): Played the role of Father O'Neil
Television:
* Doctor Who (2005-2010, 2013, 2023): Played the role of The Master
* The Fades (2011): Played the role of Paul
* Torchwood (2006-2011): Played the role of The Master
* Silent Witness (2000-2023): Played various roles
* Peaky Blinders (2013-2022): Played the role of Aberama Gold
* The Bill (1984-2010): Played various roles
* EastEnders (1985-2023): Played the role of Michael Moon (2011-2012)
* Casualty (1986-2023): Played various roles
Other:
* The Lord of the Rings: The Return of the King (2003): Played a Lurtz Orc (uncredited)
* The Lord of the Rings: The Fellowship of the Ring (2001): Played a Uruk-hai (uncredited)
This is not an exhaustive list, but it highlights some of his more significant roles. Julian Bleach is a talented actor who has worked in various genres and across multiple media platforms.