In addition to his film and TV screenplays, John has written for The Telegraph and online publications on film history, politics and religion. His first book Harryhausen: The Lost Movies was published by Titan Books in 2019. His second book Flash Gordon: The Official Story of the Film was published in 2020. Both are Rondo Hatton Award Nominees for Book of the Year.
His third book ESCAPE FROM NEW YORK: The Official Story of the Film is published in September 2021.