Vivian French is a professional storyteller as well as an acclaimed children's author who has written over forty picture books for Walker alone. She is the author of Yucky Worms and T. Rex in the Nature Storybooks series, and the comic fantasy series Tales from the Five Kingdoms, which began with The Robe of Skulls. She is also the popular author of the Tiara Club series. Vivian lives in Edinburgh, Scotland.

Sue Heap won the Smarties Prize for Cowboy Baby and has enjoyed success with her books with Sally Lloyd-Jones, including How to Be a Baby, by Me, the Big Sister, which was on the New York Times Bestseller List, and How to Get Married, by Me, the Bride. Sue lives in Chipping Norton, Oxfordshire.