Paul Longley is a professor with the Department of Geography at the University College London, UK.
Sue M. Brooks is a Reader in Environmental Systems Analytics at Birbeck, University of London. She has also lectured at the University of Oxford and the University of Bristol.
Rachael McDonnell is a lecturer in the School of Geography, Oxford University.
Bill MacMillan is the editor of Geocomputation: A Primer, published by Wiley.