Simon Jeffs is a member of the Southern Electric Group and has co-authored a recent history of the Brighton Belle service. He lives in Eastbourne. John Christopher has written and edited a number of books on Engineering, Military History and Railway and Road Transport, specializing in the life and works of Isambard Kingdom Brunel and being the series editor for Amberley's Bradshaw's Guides series. He has also appeared in Michael Portillo's Great British Railway Journeys television series. In between writing books, he is a balloon pilot and Land Rover fan. He lives in Gloucestershire.