Simpson, M J
Chronological Checklist
- The Pocket Essentials Hitchhiker's Guide (Harpenden, Hertfordshire: Pocket Essentials, 2001)
- The Pocket Essentials Hitchhiker's Guide (Harpenden, Hertfordshire: Pocket Essentials, 2001)
- Don't Panic: Douglas Adams & The Official Hitch Hiker's Guide to the Galaxy (London: Titan Books, 2003) with David K Dickson and Neil Gaiman
- Hitchhiker: A Biography of Douglas Adams (London: Hodder and Stoughton, 2003)
- The Pocket Essentials Hitchhiker's Guide (Harpenden, Hertfordshire: Pocket Essentials, 2005)
- Urban Terrors: New British Horror Cinema: 1997-2008 (Hailsham, East Sussex: Hemlock Books: 2012)
- Dog Soldiers and Doghouses (2000-2011) (place not known: for the author, 2020)
- White Settlers and Women in Black (2012-2015) (place not known: for the author, 2021)
- Killer Clowns and Demonic Dolls (2016-2019) (place not known: for the author, 2022)
- Addendum: Unreleased and Incomplete (2000-2019) (place not known: for the author, 2023?)