Writer and historian David Long is the award-winning and bestselling author of the acclaimed Survivors series, Pirates Magnified, We are the Romans, The World's Most Magnificent Machines, Tragedy at Sea, The Story of the London Underground and more than twenty other non-fiction books on a wide range of historical subjects. He is married to Rosy and lives in Suffolk. Terri Po is a children's book illustrator who was highly commended in the FAB Prize. She is originally from Hong Kong but graduated from the University of Edinburgh in 2018. She creates editorial illustrations, infographics and illustrated books, as well as doing live graphic facilitation.