Mara Bergman is an award-winning author, poet and editor who has written over twenty books for young children.

Her picture book titles include Bears, Bears Everywhere, illustrated by Helen Craig, Snip Snap Alligator, illustrated by Nick Maland and winner of the Stockport Children's Book Award, Oliver Who Would Not Sleep and Oliver Who Travelled Far and Wide, which won a Booktrust Early Years Award.

Born in New York and raised on Long Island, USA, Mara now works in London and lives in Tunbridge Wells, Kent.

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.