Helen Oxenbury is among the most popular and critically acclaimed illustrators of her time. Her numerous books for children include Farmer Duck by Martin Waddell, We're Going on a Bear Hunt by Michael Rosen, as well as her classic board books for babies.

She won the Kate Greenaway Medal for Alice's Adventures in Wonderland. Her most recent picture books include the critically acclaimed There's Going to Be a Baby, the first book-publishing collaboration between her and her husband John Burningham, and Charley's First Night and When Charley Met Granpa, written by Amy Hest. Helen lives in London.

Michael Rosen is one of the most popular authors for children. His bestselling titles published by Walker Books include We're Going on a Bear Hunt, A Great Big Cuddle, Little Rabbit Foo Foo, Michael Rosen’s Sad Book, Tiny Little Fly and What Is Poetry?.

Michael received the Eleanor Farjeon Award for distinguished services to children’s literature in 1997, and was the Children’s Laureate from 2007 to 2009. He is a distinguished critic and academic, Professor of Children's Literature at Goldsmiths, University of London.

He also presents radio programmes for the BBC, and is a political commentator. Michael lives in London.