Charlotte and Adam Guillain met in Zanzibar working with Voluntary Services Overseas. Since then, they have created many stories together. Walking to school with their children led to the inspiration for this series. The couple lives in London. Lucia Gaggiotti is an illustrator and graphic designer. She was short-listed for the Waterstones Children's Book Prize in 2018 for her picture book I Really Want the Cake . She splits her time between London and Italy.