Greg Watts has written books with, or about, undertakers, former gangsters, artists, popes and politicians. In 2015 he published a memoir, The Long Road Out of Town.
His book Ole! Ole! Passion on a Plate: The Rise of Spanish Cuisine in London won the Best Foreign-International Cuisine in the UK category of the 2016 Gourmand World Cookbook Awards.
In July 2018 his first novel, The Man Behind the Menu, a satire about the London restaurant scene, was published.