Developing Safe Systems contains papers presented at the twenty-fourth annual Safety-critical Systems Symposium, held in Brighton, UK, in February 2016. The Symposium is for engineers, managers and academics in the field of system safety, across all industry sectors, so the papers making up this volume offer wide coverage of current safety topics, and a blend of academic research and industrial experience. They include both recent developments in the field and discussion of open issues and questions. The topics covered in this volume include: autonomy and vehicles, systems safety and cyber security, data safety, human error, agile methods, sub-sea gliders and aviation accident investigations. This book will be of interest to practitioners, managers and academics working in the safety-critical and safety-related systems areas.