Mark Sperring studied at Bath Academy of Art and Camberwell College of Art before working as a printer and a bookseller, and later becoming a children's book author.

Mark is the author of The Shape of My Heart (Bloomsbury), Captain Buckleboots on the Naughty Step (Puffin) and The Sunflower Sword (Andersen). He lives in Bristol.

Alison Brown grew up in Bangor, Northern Ireland, and studied art at Manchester Metropolitan University, and Liverpool John Moores University, and Goldsmiths, University of London.

Before becoming a full-time illustrator and writer, she taught English, worked in a bookshop, and designed holiday displays, among other things.

She credits her love of comics and cartoons—particularly Peanuts by her hero Charles M. Schulz—for her path toward a career in picture books. Brown works with publishers around the UK, and her books have been published in many different languages