1. The Traumatic Brain Injury Centre; Department of Neurosurgery; St Mary's Hospital; Imperial College; London UK
2. London's Air Ambulance; The Helipad; The Royal London Hospital; Queen Mary University of London; London UK
3. The British Neurotrauma Group; The Society of British Neurosurgeons; Royal College of Surgeons; London UK
4. Division of Neurosurgery; Department of Clinical Neurosciences; Addenbrooke's Hospital & University of Cambridge; Cambridge UK