Mike Hall is an illustrator and obsessive mapmaker from Harlow, UK. A graduate of the University of Westminster, he has created artwork for a broad range of clients in the UK and around the world, including Butlin's, Harper's Magazine, Penguin Books and the Royal Horticultural Society. He has lived in the London Boroughs of Brent, Harrow, Islington and Lewisham, and is now based in Valencia, Spain.

Matt Brown is author of several books for Batsford, including Atlas of Imagined Places. He has served as editor and editor-at-large of Londonist.com, writing on topics as diverse as street art, politics, map-making and science. With a deep love of trivia, he's written and hosted hundreds of quizzes, including events for the Museum of London and Manchester Science Museum, among many others. He lives in Hertfordshire and tweets at @mattfromlondon.