David Hoyle as a manager, consultant, author and mentor has been helping individuals and organizations across the world understand and apply ISO 9001 effectively since its inception in 1987. He has held senior positions in quality management with British Aerospace and Ferranti International and worked with such companies as General Motors, the UK Civil Aviation Authority and Bell Atlantic on their quality improvement programmes. Although neither a member of ISO nor BSI technical committees, he has been a member of the CQI for over 40 years and through his work with them built a network of like-minded professionals including members of ISO and BSI technical committees, which gave him privileged access to many reports, presentations and early drafts and thus gained an insight into the thinking behind ISO 9001:2015.