Allen Jackson joined the Royal Air Force as an apprentice. He subsequently worked on Cold War aircraft and later taught at an engineering apprentice training school. After leaving the RAF he worked for a manufacturer of bespoke computer systems before becoming involved with computerized systems for the fire and rescue services in the UK and Bahrain. He formed his own company in 2004. Allen has been fascinated by real and model railways since he was six. His books for Crowood include the highly acclaimed A Contemporary Perspective on GWR Signalling - Semaphore Swansong, and Great Western Railway Stars, Castles and Kings.