The Duke joined EAAA as a pilot in March 2015 and, after completing an initial period of job specific training involving simulator, aircraft and in-flight skills training, he began piloting his first operational missions in July 2015.

Throughout his service, William has been based out of Cambridge Airport, as part of a team including specialist doctors, critical care paramedics and pilots providing emergency medical services across Bedfordshire, Cambridgeshire, Norfolk and Suffolk.

One man, known only as Jack, who was 17 when the Duke saved his life, paid tribute to his work.

In 2015, Jack was involved in a car accident that left his uncle, Phillip Beeton, dead.

The Duke helped to fly the apprentice carpenter, who broke almost every bone in his body and was in a coma for three weeks afterwards, to hospital.

Jack, now 19, from Littleport, near Ely, has no recollection of the incident and only learned of the prince's involvement several weeks later while still in hospital.