Atinuke was born in Nigeria and spent her childhood in both Africa and the UK. As a traditional oral storyteller, drawing upon her recent Yoruba ancestry, she visits schools and theatres all over the world.

Atinuke is the author of the bestselling Anna Hibiscus fiction series, as well as the No. 1 Car Spotter series, and the picture books Baby Goes to Market also illustrated by Angela Brooksbank and Hugo illustrated by Birgitta Sif. Atinuke lives on a mountain overlooking the sea in west Wales and supports the charity SOS Children's Village.

Birgitta Sif, a graduate of the Cambridge School of Art, has illustrated a number of picture book titles including Miss Hazeltine's Home for Shy and Fearful Cats, written by Alicia Potter, and Snowboy and the Last Tree Standing, written by Hiawyn Oram.

She is also the author-illustrator of the Kate Greenaway shortlisted Oliver, and Frances Dean Who Loved To Dance and Dance, both of which were endorsed by Amnesty International.

Born in Iceland, Birgitta lived in and around Scandinavia and America while growing up, and now lives with her family in Cambridge.