WARHAMMER 40,000: KRIEG (released in hardback, paperback, audiobook, French and German editions by Games Workshop/Black Library, 2022)

WARHAMMER 40,000: IRON RESOLVE (Games Workshop/Black Library, 2019, reprinted in IMPERIUM AT WAR, 2020)

WARHAMMER 40,000: ANGRON'S MONOLITH (e-novella, Games Workshop/Black Library, 2014, physical release 2015, reprinted in WAR FOR ARMAGEDDON THE OMNIBUS, 2018)

WARHAMMER 40,000: ENGINES OF WAR (e-novella, Games Workshop/Black Library, 2014, physical release 2015, reprinted in THE PLAGUES OF ORATH, 2016)

METAWARS 4.0: THE FREEDOM FRONTIER (from an outline by Jeff Norton, Orchard Books, 2014)

METAWARS 3.0: BATTLE OF THE IMMORTAL (from an outline by Jeff Norton, Orchard Books, 2013)

METAWARS 2.0: THE DEAD ARE RISING (from an outline by Jeff Norton, Orchard Books, 2012)

METAWARS 1.0: FIGHT FOR THE FUTURE (an original children's science-fiction novel, from an outline by Jeff Norton, Orchard Books, 2012; WINNER OF THE ROTHERHAM CHILDREN'S BOOK AWARDS, 2013)

DOCTOR WHO: TERMINAL OF DESPAIR (Penguin/BBC Children's Books, published as one half of DOCTOR WHO: SIGHTSEEING IN SPACE, a ‘2 in 1’ book, 2011, individual release by Puffin Books for the USA, 2016)

WARHAMMER 40,000: DEAD MEN WALKING (Games Workshop/Black Library, 2010, reprinted in HONOUR IMPERIALIS, 2014, reissued as a Readers' Choice Winner 2021, Russian edition by Fantastika Book Club, 2013, audiobook 2023)

WARHAMMER 40,000: ICE GUARD (Games Workshop/Black Library, 2008, reprinted in HAMMER OF THE EMPEROR, 2011, French edition by Bibliothèque Interdite, 2010, Russian edition by Fantastika Book Club, 2013)

WARHAMMER 40,000: DEATH WORLD (Games Workshop/Black Library, 2006, reprinted in IMPERIAL GUARD OMNIBUS VOLUME 1, 2008 and SHIELD OF THE EMPEROR, 2019, Russian edition by Fantastika Book Club, 2012)

BRYAN SINGER AND DEAN DEVLIN’S THE TRIANGLE (ibooks, 2005 - novelisation of a script by Rockne S O'Bannon)

STRONTIUM DOG: A FISTFUL OF STRONTIUM (co-written with Jaspre Bark, Games Workshop/Black Flame, 2005)

DOCTOR WHO: THE STEALERS OF DREAMS (BBC Books, 2005 - A UK BESTSELLER; reissued in paperback 2007, 2014, audiobook read by Camille Coduri, AudioGo/BBC Audiobooks, 2012; French edition by Milady, 2012, Chinese edition by New Star Press, 2018)

MICRONAUTS: THE TIME TRAVELER TRILOGY BOOK THREE (ibooks, 2004)

MICRONAUTS: THE TIME TRAVELER TRILOGY BOOK TWO (ibooks, 2003)

MICRONAUTS: THE TIME TRAVELER TRILOGY BOOK ONE (ibooks, 2003)

X-MEN: THE LEGACY QUEST TRILOGY BOOK THREE (BP Books/Marvel, 2002; trilogy collected in one volume, 2004)

X-MEN: THE LEGACY QUEST TRILOGY BOOK TWO (BP Books/Marvel, 2002)

X-MEN: THE LEGACY QUEST TRILOGY BOOK ONE (BP Books/Marvel, 2002)

DOCTOR WHO: THE CROOKED WORLD (BBC Books, 2002)

DOCTOR WHO: THE SPACE AGE (BBC Books, 2000)

DOCTOR WHO: THE FINAL SANCTION (BBC Books, 1999)

DOCTOR WHO: SALVATION (BBC Books, 1999)

DOCTOR WHO: THE WITCH HUNTERS (BBC Books, 1998, reissued as part of Doctor Who: The History Collection, 2015, audiobook read by David Collings, BBC Physical Audio, 2016)

DOCTOR WHO: THE MURDER GAME (BBC Books, 1997)

DOCTOR WHO: KILLING GROUND (Virgin Publishing, 1996)

DOCTOR WHO: HEAD GAMES (Virgin Publishing, 1995)

DOCTOR WHO: TIME OF YOUR LIFE (Virgin Publishing, 1995)

DOCTOR WHO: CONUNDRUM (Virgin Publishing, 1994)

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