Stephen writes picture books, chapter books, young adult novels, TV tie-ins and educational books. Many of his books are set in West Africa, on the edge of the Sahara Desert. His first book 'Sophie and the Albino Camel' won the Glen Dimplex Prize for best debut children's book. Since then, his books have been translated into fifteen languages and shortlisted for awards. He is currently writing the third season of 'Hilda' books to tie in with the Netflix animation.

Stephen lives in London with his wife and two daughters. He enjoys visiting schools, helping students with their own creative writing.