Bob Graham is a Kate Greenaway-winning author-illustrator who has written and illustrated many acclaimed children's picture books including How to Heal a Broken Wing, How the Sun Got to Coco's House, Max, Jethro Byrde: Fairy Child and April Underhill: Tooth Fairy.

His 2011 title, A Bus Called Heaven, is endorsed by Amnesty International UK and was the winner of the 2012 Children's Book Council of Australia Picture Book of the Year Award a prize Bob has won an unprecedented six times. In 2014, Silver Buttons was awarded a prestigious Prime Minister's Literary Award in Australia. Bob lives in Melbourne.

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.