Tat Wood is co-writer (with Lawrence Miles) of the About Time episode guides to the television series Doctor Who. This book series, begun in 2004, emphasises the importance of understanding the series in the context of British politics, culture and science. Volume Six is entirely Wood's work.
Wood has also written for Doctor Who Magazine. In a 1993 edition of "Dreamwatch", he wrote a piece entitled "Hai! Anxiety", in which the Jon Pertwee era of the series was — unusually for the time — held up to sustained criticism.
In addition to this he has written features for various magazines, on subjects as diverse as Crop Circles, Art Fraud, the problems of adapting Children's novels for television and the Piltdown Hoax.
He is also active in Doctor Who fandom, notably as editor of the fanzines Spectrox, Yak Butter Sandwich and Spaceball Ricochet. Some of his fan writing was included in the anthology Licence Denied, published in 1997.