Lou Peacock has a degree in English literature from Oxford University and has worked in children's publishing for more than twenty years. She started her editorial career working on novelty books and poetry, but has focused on picture books for the last eighteen years and often writes picture books for Nosy Crow, including Mr. Brown's Bad Day, Nuts!, Oliver Elephant, and Lionel and the Lion's Share.

Nicola Slater began her career as an usher, but then chose to study illustration, where she developed a passion for children's books that far surpassed her love of popcorn. She is also the illustrator of Twinkle, Twinkle, Little Star and Happy Birthday to You! She lives with her family in Cheshire, England.