1 Consultant in Anaesthesia and Intensive Care Medicine, North Bristol NHS Trust, Honorary Professor, Bristol University, Bristol, UK, and Chair, AAGBI Working Party 2 Senior Speciality Trainee in Anaesthetics and Intensive Care Medicine, Severn Deanery, UK 3 Consultant in Emergency Medicine, Royal London Hospital, London, UK, and Royal College of Emergency Medicine 4 Senior Lecturer in Anaesthetics and Intensive Care Medicine, Cardiff University, Cardiff, UK 5 Consultant in Anaesthesia and Intensive Care Medicine, Derby Hospitals NHS Foundation Trust, Derby, UK, and Faculty of Pre-hospital Care, Royal College of Surgeons of Edinburgh, Edinburgh, UK 6 General Practitioner, Auchterarder, Perthshire, UK, and British Association for Immediate Care, Scotland, UK 7 Consultant in Anaesthesia, Royal Centre for Defence Medicine, Honorary Emeritus Professor Imperial College, London, UK 8 Consultant in Anaesthesia and Intensive Care Medicine, Royal United Hospital, Bath, Honorary Professor of Resuscitation Medicine, Bristol University, Bristol, UK, and Royal College of Anaesthetists 9 Consultant in Emergency Medicine, Mid-Yorkshire NHS Trust, Dewsbury, UK, and British Association for Immediate Care, Ipswich, Suffolk, UK 10 Consultant in Anaesthesia, North Bristol NHS Trust, Bristol, UK, and AAGBI Board 11 Consultant in Anaesthesia, Countess of Chester Hospital, Chester, UK, and AAGBI Board 12 General Practitioner, Medical Director, Kent, Surrey, Sussex Air Ambulance Trust, Tonbridge, UK, and Royal College of General Practitioners 13 Consultant, Royal United Hospital Bath, Avon, UK, and Group of Anaesthetists in Training, AAGBI 14 Consultant, St Mary’s Major Trauma Centre, Imperial College, London, UK, and Military Pre-hospital Emergency Medicine