Based in Letchworth Garden City, John Allison is the creator of the comic series Giant Days, Wicked Things, By Night and Steeple, and of the ongoing all-ages book series Bad Machinery. In addition, he created the webcomics Bobbins and Scary Go Round, with his work appearing online since 1998. He was one of the first comic artists to build a daily following exclusively on the internet.

John's comics have been nominated for Eisner Awards every year from 2016-2019, winning twice, and in 2018 he won the Best Long-Form Online Comic award from the US National Cartoonists’ Society. Giant Days is currently being published in eight foreign language editions.