Donna David grew up in the West Midlands in a house full of noisy siblings, fun parents, mad aunties and maggots (her dad is a fisherman). She’d often be found reading by torchlight way after bedtime and this love of reading has never left her. Donna has a degree in English from Loughborough University and currently works as an English coach at the local secondary school. She is the author of Trains Trains Trains! and Farmer Llama, published by Macmillan Children's Books.

Nina Pirhonen is a Finnish illustrator, designer and children's book author, with a bright, bold and distinctive contemporary style. She has created multiple picture books in Finland, including the popular Leo the Lion series, and her work includes fashion and textile design for Marimekko. She is the illustrator of the colourful 50 to Follow and Count preschool series for Macmillan Children's Books, including Trains Trains Trains and Cars Cars Cars.