The Story of the Solar System (BBC Books, 2024) - co-author with Professor Maggie Aderin-Pocock and illustrator Emma Price
Doctor Who: The Time-Travelling Almanac (BBC Books, 2024)
Doctor Who: Whotopia (BBC Books, 2023) - co-author with Jonathan Morris and Una McCormack
The Art of Stargazing (BBC Books, 2023) - project editor for book by Professor Maggie Aderin-Pocock
David Whitaker in an Exciting Adventure with Television (Ten Acre Films, 2023)
Black Archive: The Edge of Destruction (Obverse, 2023)
Doctor Who: The Daily Doctor (BBC Books, 2023) - co-author with Peter Anghelides
The Further Adventures of Sherlock Holmes: The Great War (Titan, 2021)
Doctor Who: The Women Who Lived (BBC Books, 2018) - co-author with Christel Dee
Buffy the Vampire Slayer: Slayer Stats (Insight Editions, 2018) - co-author with Steve O'Brien and illustrator Ilaria Vescovo
Doctor Who: Paper Dolls (BBC Books, 2017) - co-author with Christel Dee and illustrator Ben Morris
Doctor Who: The Book of Whoniversal Records (BBC Books, 2017)
Black Archive: The Evil of the Daleks (Obverse, 2017)
Doctor Who: Whographica (BBC Books, 2016) - co-author with Steve O'Brien and illustrator Ben Morris
Doctor Who: The Scientific Secrets of Doctor Who (BBC Books, 2015) - co-author and co-editor with Dr Marek Kukula
LEGO: I Love That Minifigure (Dorling Kindersley, 2015) - as contributor
Afterblight Chronicles: Fall Out (Rebellion, 2015) - and republished as part of The End of the End (Rebellion, 2016)
Top Trumps: Space (Puffin, 2014)
Being Human: The Road (BBC Books, 2010)
Bernice Summerfield: The Inside Story (Big Finish Productions, 2009)
Doctor Who: The Slitheen Excursion (BBC Books, 2009)
Primeval: Fire and Water (Titan, 2009)
Doctor Who: How the Doctor Changed My Life (Big Finish Productions, 2008) - as editor
Doctor Who: The Pirate Loop (BBC Books, 2007)
Doctor Who: Short Trips - Dalek Empire (Big Finish Productions, 2006) - co-editor with Nicholas Briggs
Doctor Who: Short Trips - Time Signature (Big Finish Productions, 2006) - as editor
Bernice Summerfield: Something Changed (Big Finish Productions, 2006) - as editor
Doctor Who: The History of Christmas (Big Finish Productions, 2005) - as editor
Doctor Who: The Time Travellers (BBC Books, 2005)
Bernice Summerfield: A Life Worth Living (Big Finish Productions, 2004) - as editor
