1. Emergency Responder, London Ambulance Service NHS Trust, London, UK
2. Emergency Responder, London Ambulance Service NHS Trust, Barts Health NHS Trust
3. Emergency Responder Team Leader, London Ambulance Service NHS Trust; Chris Hartley-Sharpe, Head of First Responders, London Ambulance Service NHS Trust
4. Emergency Responder Team Leader and Research Lead, London Ambulance Service NHS Trust, Barts Health NHS Trust