Francesca Simon is universally known for the staggeringly popular Horrid Henry series. These books and CDs have sold over 20 million copies in the UK alone and are published in 27 countries. Horrid Henry and the Abominable Snowmanwon the Children's Book of the the Year award in 2008 at the British Book Awards. She is also the author of The Monstrous Child, The Lost Gods and The Sleeping Army for older children and Hack and Whack, her first picture book. She lives in North London with her family.
Leo Broadley is an illustrator and lecturer at the University of Derby. He has written and illustrated a number of books for publishers as well as a winery and The Shakespeare Birthplace Trust.