Hiawyn Oram has been writing children's books for more than 20 years and has more than 90 books published to date, including the picture books Angry Arthur, The Good Mood Hunt and Filbert, the Good Little Fiend, illustrated by Jimmy Liao.

She has won the Japanese Picture Book Award and the Prix du Livre Culturel. She lives in West London.

Sarah grew up in Anglesey, North Wales. She studied illustration at the University of the West of England, in Bristol, and hasn't looked back since.

Sarah has created many books, working for a large variety of publishers, including illustrating the Rumblewick series, which has sold worldwide and is under movie option with DreamWorks.

Her Princess series, written by Caryl Hart, has sold over 220,000 copies worldwide. Sarah lives in Bristol with her husband, two children and a grumpy guinea pig.