Atinuke was born in Nigeria and spent her childhood in both Africa and the United Kingdom. She is the author of the award-winning Anna Hibiscus series, illustrated by Lauren Tobia, as well as Hugo, illustrated by Birgitta Sif, and Too Small Tola, illustrated by Onyinye Iwu. Her other books include Baby, Sleepy Baby; Baby Goes to Market; B Is for Baby; and Catch That Chicken!, all illustrated by Angela Brooksbank. Atinuke lives in Wales.