David Burnell was born and bred in York. He studied mathematics at Cambridge University, taught the subject in West Africa and came across Operational Research. He returned to study this at Lancaster and then spent his professional career applying the subject to management problems in the Health Service, coal mining and latterly the water industry. His team won the Innovation Award from the British Computing Society for a system to schedule the London Ring Main and the Presidents’ Medal from the Operational Research Society. On "retiring" he completed a PhD at Lancaster on the deeper meaning of data from London’s water meters. He and his wife live in Berkshire but own a small holiday cottage in North Cornwall. They have four grown-up children. David is now hard at work on further books in the "Cornish Conundrum" series.