Received: 13 August 2020
Accepted: 21 April 2021
First Online: 7 May 2021
: Internal service approval was sought from the Research, Audit and Development Department at KSSAAT. All patient data were collected routinely as standard; therefore, ethics committee approval was not required. Patient identifiable data has been anonymised and stored on electronic devices with technical encryption (Data Protection Act, 1998).
: Not applicable.
: JG, ETA, RDC, MN and RL are all employees of Air Ambulance Kent, Surrey and Sussex. JB, JW and MN are employees of South East Coast Ambulance Service NHS Foundation Trust. There were no financial or non-financial conflicts of interest.