Ann Bonwill grew up in America. Her mother worked as a children's librarian so Ann was always surrounded by books and she loved to read and write stories throughout her childhood. After gaining a psychology degree and a master's degree in social work, Ann worked in a variety of social care positions in schools and hospitals and taught at a Montessori school. Ann lives in the US with her husband and young son. As well as the Hugo and Bella stories, Ann is the author of Pocket's Christmas Wish, Naughty Toes, and Bug and Bear also published by OUP. Simon Rickerty has been drawing pictures and creating characters ever since he can remember. He studied illustration at the London College of Communication and graduated in graphic and media design. He then went on to complete a masters in communication, art and design at the Royal College of Art.

Simon lives in Somerset.