The Sundowners series

• Ghost Town (2001)
• Underworld (2001)
• Iron Dragon (2001)
• Showdown 2001)

Warhammer 40,000

• Deus Encarmine (2004)
• Deus Sanguinius (2005)
• Faith & Fire (2006)
• The Flight of the Eisenstein (2007)
• Red Fury (2008)
• The Blood Angels Omnibus (Collected edition of Deus Encarmine, Deus Sanguinius and the short story Blood Debt) (2008)
• Black Tide (2009)
• The Book of Blood (Collected edition including Heart of Rage and the short stories Crimson Night and Blood Debt) (2010)
• Nemesis (2010)
• Bloodline (Chapbook) (2010)

Star Trek

• Star Trek: Terok Nor - Day of the Vipers (2008)
• Star Trek Myriad Universes - Infinity's Prism (includes novella Seeds of Dissent) (2008)
• Star Trek: Titan - Synthesis (2009)
• Star Trek - Cast No Shadow (2011)

Doctor Who

• Peacemaker (2007)

Stargate

• Stargate Atlantis: Halcyon (2006)
• Stargate SG-1: Relativity (2007)
• Stargate Atlantis: Nightfall (2009)
• Stargate Universe: Air (2009)

2000AD

• Judge Dredd: Eclipse (2004)
• Rogue Trooper: Blood Relative (2005)
• Judge Dredd: Whiteout (2005)
• I Am The Law: The Judge Dredd Omnibus (Collected edition including Eclipse) (2006)

Dark Future

• Jade Dragon (2006)

Deus Ex

• Icarus Effect (2011)

Other Fiction

• The Butterfly Effect (2004)

• Snowblind - Silent Night (2002)
• Crimson Night - Inferno! #38 (2003), reprinted in What Price Victory (2004), The Book of Blood (2010)
• Wings of Bone - Inferno! #40 (2004)
• Relics - Inferno! #43 (2004)
• Passive/Aggressive - Judge Dredd Megazine #225 (2004)
• Closure - Star Trek Voyager: Distant Shores (2005)
• Siege Mentality - Bernice Summerfield Something Changed (2006)
• Museum Peace - Doctor Who Dalek Empire (2006), reprinted in Doctor Who Collections (2009), audiobook (2010)
• Choices - Stargate: The Official Magazine #10 (2006)
• The Inconstant Gallery - Bernice Summerfield Collected Works (2006)
• Lady of the Snows - Doctor Who Destination Prague (2007)
• Outsiders - Stargate: The Official Magazine #20 (2007)
• Piecemeal - Doctor Who Snapshots (2007)
• Ordinary Days - Star Trek The Next Generation: The Sky's The Limit (2007)
• Clean-up on Aisle Two - Doctor Who The Quality of Leadership (2008)
• Blood Debt — The Blood Angels Omnibus (2008), reprinted in The Book of Blood (2010)
• Straw Man — Battlecorps.com (2008)
• The Black Flag - Star Trek Mirror Universe: Shards and Shadows (2009)
• The Voice - Tales of Heresy (2009)
• Target Market - Full-Throttle Space Tales Volume 3: Space Grunts (2009)
• The Slow Knife - Star Trek: Seven Deadly Sins (2010)
• The Returned - Legends of the Space Marines (2010)
• Liar's Due - Age of Darkness (2011)

• The Manga Collector's Edition, Volume 1 (co-writer with Peter J. Evans) (1995)
• Starlog: Star Trek's Greatest Guest stars (contributing writer) (1997)
• Dark Eye: The Films of David Fincher (2003)
• Games Writing: Narrative Skills for Videogames (contributing writer) (2006)

Star Trek Voyager

• One, episode #193, 4th season (original story concept) (1996)
• Memorial, episode #236, 6th season (original story concept) (1998)

Doctor Who audio drama

• Doctor Who: Singularity (2005)
• Doctor Who: Kingdom of Silver / Keepsake (2008)
• Doctor Who - The Companion Chronicles: Old Soldiers (2007)
• Doctor Who: Peacemaker (audiobook) (2008)
• Cyberman 2: Outsiders (2009)
• Cyberman 2: Terror (2009)
• Cyberman 2: Machines (2009)
• Cyberman 2: Extinction (2009)
• Doctor Who - Short Trips in Time & Space: Museum Peace (audiobook) (2010)

Blake's 7 audio drama

• Blake's 7 The Audio Adventures - Liberator (2007)
• Blake's 7 The Early Years - Point of No Return (2008)
• Blake's 7 The Early Years - Escape Velocity (2010)
• Blake's 7 The Audio Adventures - Alliance (TBC)

Stargate audio drama

• Stargate SG-1 - Shell Game (2008)
• Stargate Atlantis - Zero Point (2008)
• Stargate SG-1 - First Prime (2009)
• Stargate SG-1 - Half Life (TBC)

2000AD audio drama

• Judge Dredd: Dreddline (2003)
• Judge Dredd: Jihad (2004)
• Judge Dredd: Grud is Dead (2004)
• Judge Dredd Crime Chronicles: Blood Will Tell (2009)
• Judge Dredd Crime Chronicles: Double Zero (2010)

Warhammer 40,000 audio drama

• Heart of Rage (2009), appears in prose form in The Book of Blood (2010) and Victories of the Space Marines (2011)
• Oath of Moment (2010)
• Legion of One (2011)
• Red & Black (TBC)

Space 1889 audio drama

• The Steppes of Thoth (2005)

• Star Trek Invasion (2001)
• Battlestar Galactica video game (2003)
• Maelstrom (2007)
• Killzone 2 (2009)
• Necrovision (2009)
• Odyssey to the West DLC (2010)
• Human Revolution (2011)

• Voice-Over Direction on Maelstrom (2007)
• Script Editor on Stargate audio drama series 3, episodes 2-6 (TBC)
• Script Editor on Highlander: The Four Horsemen audio drama series, episodes 1-4 (2011)