Timothy Knapman studied history at Oxford. Since then he has spent his time writing plays, musicals, songs, operas, and children's books. His books include the best-selling Dinosaurs in the Supermarket, Eleanor’s Eyebrows, and Mungo and the Picture Book Pirates and its sequels. They have been translated into 15 languages and have been read on CBeebies Bedtime Stories. Tim has also written for CBeebies’ "Driver Dan’s Story Train."

Sean Sims lives and works in Brighton, UK, where he combines his illustration skills with his encyclopedic knowledge of 20th century design to conjure up his unique, retro-twist illustrations.