Paul's books cover a wide range of subjects, from whether the Romans ate crisps to how to build the world's best skatepark, but he writes mostly about sport.

Whether you are interested in swimming or cycling, snowboarding, surfing or another sport, Paul has probably written something that will inspire you to get out and give it a try.

Paul writes in a shack by the beach, which he shares with his one-eyed surf dog, Daisy.

Katy grew up in Brighton and was obsessed with drawing from a young age, spending many hours writing and illustrating her own stories, which her father (award-winning illustrator Chris Riddell) collected. Katy rediscovered her love for illustrating children's books after graduating with a BA Hons in Illustration and Animation from Manchester Metropolitan University.

She has worked on a variety of commissions including Pongwiffy by Kaye Umansky (Simon & Schuster), Midnight Feasting by A.F. Harrold (Bloomsbury) and Ever After at the Oxford Story Museum. She lives and works in Brighton.