Hiawyn Oram is a very successful author of children's books in Britain. Her books include the popular Not-So-Grizzly Bear Stories, the Animal Heroes series, and Mona the Vampire. She lives in London. Sarah Warburton studied art at Bangor, North Wales. She has illustrated Tilly and the Wild Goats and the Happy Ever After series for Orchard Books, and she lives in Bristol, England.