Katrina has spent her life surrounded by books ever since her first visit to the library when she was tiny. She now lives in a house full of bookshelves fit to bursting, and continues to fill them with books that she has written.

She recently won Booktrust's Story Time prize for her and Nick Sharratt's picture book The Whales on the Bus.

When she's not writing for children, she is cuddled up with one of her fluffy cats and a good book, or plucking cat hairs off her clothes.

Since graduating from Loughborough University with a degree in Illustration, Lucy Truman has become one of the UK's leading commercial illustrators. Her inspiration often comes from the very funny little people in her own life, including family holidays with her nephew as well as her own children.

Lucy also draws inspiration from popular culture, fashion and all things vintage to create her fabulous artworks. She finds people-watching a huge source of help, and also very entertaining.