Chris Howarth was a writer for Doctor Who Magazine.
Howarth co-wrote The Completely Useless Encyclopedia with Steve Lyons in 1997. Howarth and Lyons updated the book in 2006 as The Completely Unofficial Encyclopedia.
The two also cowrote A Rough Guide, an in-universe history of Gallifrey in the form of a temporal travel guide, published in two parts in DWM 297 and DWM 299 in 2000.