Jill Windle is a Triage Consultant Nurse with the Advanced Life Support Group and a retired Lecturer Practitioner in Emergency Nursing at Salford Royal Hospitals NHS Foundation Trust and the University of Salford, combining frontline triage expertise with years of clinical teaching experience. Kevin Mackway-Jones is a retired Consultant Emergency Physician from Manchester Royal Infirmary and Manchester Children's Hospital, and Medical Director of the North West Ambulance Service, bringing decades of emergency medicine leadership to the development of the Manchester Triage System. Stephanie Allmark is a Paramedic with the North West Ambulance Service and an Emergency Department nurse who leads Clinical Development for the Manchester Triage Group, contributing both prehospital and hospital-based clinical triage perspectives to this edition. Janet Marsden is the late Professor of Ophthalmology and Emergency Care and former Director of the Centre for Effective Emergency Care at Manchester Metropolitan University, whose sustained research contributions advanced evidence-based emergency care practice and shaped clinical education across the discipline.