Allan Ahlberg is one of the most acclaimed and successful authors of children's books writing today.

He has won numerous awards including the Kurt Maschler Award in 1986, the Children's Book Award in 1987, the Blue Peter Book Award 2001 and the Children's Book Award: Books for Young Children 2002.

Among his numerous classic picture books are The Jolly Postman books, Burglar Bill, Peepo! and Each Peach Pear Plum. Allan's books for Walker include The Snail House, Everybody Was a Baby Once, The Runaway Dinner, Previously and The Pencil. He lives in Bath.

Katharine McEwen has been illustrating children's books for over 20 years, working with some wonderful authors including Allan Ahlberg and Michael Rosen.

After years of longing to illustrate a book about bears, she eventually bit the bullet and penned her own, Bear Hug, which was published in 2014. She lives in Kent and often seeks inspiration from the surrounding countryside.

Katharine is clueless about computers, so creates her artwork with gouache, watercolour, coloured pencils and paper collage.

As well as illustrating, Katharine is a mummy to her little boy, Finley, and when able, enjoys making ceramics, seeking out small adventures and exploring new places.