Alex Bell has published novels and short stories for both adults and young adults including Frozen Charlotte, a Zoella Book Club pick. The Polar Bear Explorers' Club was her first foray into middle grade. She always wanted to be a writer but had several back-up plans. After training as a lawyer, she now works at the Citizens Advice Bureau. Most of her spare time consists of catering to the whims of her Siamese cat.

Tomislav Tomic graduated from the Academy of fine arts in Zagreb. He started to publish his illustrations during his college days. He has illustrated a great number of children's books. He lives and works in Zapresic, Croatia.