Prince William has started his first day at Bond Air Services as he begins his training to be a pilot for the East Anglian Air Ambulance.
The Duke of Cambridge previously piloted Sea King helicopters for the RAF in Anglesey.
Over the coming months he will undertake job-specific training before he begins piloting ambulance missions during the summer.
The Duke and Duchess of Cambridge have a home at Anmer Hall on the Queen's Sandringham Estate in Norfolk.
The East Anglian Air Ambulance serves Bedfordshire, Cambridgeshire, Norfolk and Suffolk working in partnership with the East of England Ambulance Trust.
They can fly to emergencies anywhere in the region within 25 minutes.