* The Mammoth Book of Jokes & Wisecracks (1999)
* The Official Sherlock Holmes Quiz Book (2000)
* The Essential Sherlock Holmes Quiz and Puzzle Book (2001)
* Ultimate IQ Tests (2002)
* The Mammoth Book of IQ Tests (2003)
* The Mammoth Book of Puzzles & Quizzes (2004)
* The Mammoth Book of the Brain (2005)
* The Mammoth Book of the Mind (2006)
* The Mammoth Book of Mental Puzzles (2007)
* The Mammoth Book of Brain Games (2008)
* The Mammoth Book of General Knowledge (2009)
* The Mammoth Book of Word Games (2010)
* The Mammoth Book of Knowledge Quizzes (2011)
* The Mammoth Book of History Quiz (2012)
* The Mammoth Book of Science Quiz (2013)
* The Mammoth Book of Pop Quiz (2014)
* The Mammoth Book of Movie Trivia (2015)
* The Mammoth Book of TV Trivia (2016)
* The Mammoth Book of Sports Trivia (2017)
* The Mammoth Book of Music Trivia (2018)
Articles and short stories:
* "The Case of the Purloined Letter" (2001)
* "The Adventure of the Speckled Band" (2002)
* "The Adventure of the Five Orange Pips" (2003)
* "The Red-Headed League" (2004)
* "The Adventure of the Dancing Men" (2005)
* "The Adventure of the Copper Beeches" (2006)
* "The Man with the Twisted Lip" (2007)
* "The Adventure of the Greek Interpreter" (2008)
* "The Adventure of the Six Napoleons" (2009)
* "The Adventure of the Three Students" (2010)
* "The Adventure of the Golden Pince-Nez" (2011)
* "The Adventure of the Norwood Builder" (2012)
* "The Adventure of the Final Problem" (2013)
* "The Adventure of the Musgrave Ritual" (2014)
* "The Adventure of the Creeping Man" (2015)
* "The Adventure of the Sussex Vampire" (2016)
* "The Adventure of the Three Gables" (2017)
* "The Adventure of the Illustrious Client" (2018)
* "The Adventure of the Three Garridebs" (2019)
Other works:
* The Essential Sherlock Holmes (2003)
* The Complete Sherlock Holmes (2004)
* The Annotated Sherlock Holmes (2005)
* The Sherlock Holmes Reference Guide (2006)
* The Sherlock Holmes Companion (2007)
* The Sherlock Holmes Encyclopedia (2008)
* The Sherlock Holmes Dictionary (2009)
* The Sherlock Holmes Timeline (2010)
* The Sherlock Holmes Gazetteer (2011)
* The Sherlock Holmes Biography (2012)
* The Sherlock Holmes Bibliography (2013)
* The Sherlock Holmes Quiz Book (2014)
* The Sherlock Holmes Puzzle Book (2015)
* The Sherlock Holmes Game Book (2016)
* The Sherlock Holmes Activity Book (2017)
* The Sherlock Holmes Coloring Book (2018)