- Novel (featuring Alex Rider): Stormbreaker (2000)
- Novel (featuring Alex Rider): Point Blanc (2001)
- Novel (featuring Alex Rider): Skeleton Key (2002)
- Novel (featuring Alex Rider): Eagle Strike (2003)
- Novel (featuring Alex Rider): Scorpia (2004)
- Novel (featuring Alex Rider): Ark Angel (2005)
- Novel (featuring Alex Rider): Snakehead (2007)
- Novel (featuring Alex Rider): Yassen or Yassen Teenage assassin (Forthcoming)
- Novel (featuring the Diamond Brothers): The Falcon's Malteser (1986)
- Novel (featuring the Diamond Brothers): Public Enemy Number Two (1987)
- Novel (featuring the Diamond Brothers): South by South East (1991)
- Novel (featuring the Diamond Brothers): The Blurred Man (2003)
- Novel (featuring the Diamond Brothers): The French Confection (2003)
- Novel (featuring the Diamond Brothers): I Know What You Did Last Wednesday (2003)
- Novel (featuring the Diamond Brothers): The Greek Who Stole Christmas (2007)
- Novel (featuring the Diamond Brothers): The Radius of the Lost Shark (Forthcoming)
- Novel: Groosham Grange (1988)
- Novel: The Unholy Grail (1999)(aka: Return to Groosham Grange)
- Novel (Pentagram series): The Devil's Door-Bell (1983)
- Novel (Pentagram series): The Night of the Scorpion (1984)
- Novel (Pentagram series): The Silver Citadel (1986)
- Novel (Pentagram series): Day of the Dragon (1989)
- Novel: Raven's Gate (1 August 2005)
- Novel: Evil Star (2 April 2006)
- Novel: Nightrise (April 2007)
- Novel: Necropolis: City of the Dead (September 2008) (Forthcoming)
- Novel: Enter Frederick K Bower (1978)
- Novel: The Sinister Secret of Frederick K Bower (1979)
- Novel: Misha, the Magician and the Mysterious Amulet (1981)
- Novel: Robin of Sherwood: The Hooded Man (1986) (with Richard Carpenter)
- Novel: Adventurer (1987)
- Novel: New Adventures of William Tell (1987)
- Novel: Starting Out (1990)
- Novel: Granny (1994)
- Novel: The Switch (1996)
- Novel: The Devil And His Boy (1998)
- Novel: William S. (1999)
- Novel (also play): Mindgame (2001)
- Novel: The Killing Joke (2004)
- Novel: The Magpie Murders (2006)
- Collection: Myths and Legends (1991)
- Collection: Horowitz Horror (1999)
- Collection: More Horowitz Horror (2001)
- Collection: The Kingfisher Book of Myths and Legends (2003)
- Collection: Three of Diamonds (2004)
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