Prince William flew more than 150 missions in RAF Sea Kings. Photo: Flight Sergeant Andy Carnall/MoD

Prince William is to take up a new job as an air ambulance pilot, Kensington Palace has announced.

The Duke of Cambridge, who is patron of Mountain Rescue England and Wales, will take up his post with the East Anglian Air Ambulance in spring next year.

The duke, who is second in line to the throne, was previously a search and rescue helicopter with the RAF, based at Anglesey, and took part in rescue missions to walkers and climbers in Snowdonia and further afield.

During his time with the RAF, he undertook more than 150 search and rescue operations.

A spokesperson for the air ambulance service said he would join the charity’s team of pilots and clinicians providing emergency medicine at the scene of accidents and medical emergencies across the region.

EAAA chairman Andrew Egerton Smith said: “Having the Duke of Cambridge as one of our pilots is marvellous news as he brings much experience to the charity after his successful career as a search and rescue pilot.

“We have an outstanding track record of attending people in the hour of need which is recognised and generously supported by our local communities.”

A spokesperson for the duke said the pilot’s job would be the Duke’s primary occupation, but his roster will take into account the work he will continue to undertake on behalf of the Queen. It added that William will continue his work with his patronages and with the Royal Foundation of The Duke and Duchess of Cambridge and Prince Harry.

Prince William on Swirral Edge, Helvellyn, during his time with mountain rescue teams in 2009

“In common with all other East Anglian Air Ambulance pilots, the Duke will be formally employed by Bond Air Services,” the spokesperson said. “He will draw a salary which he will donate in full to charity.”

The spokesperson said the duke will begin training for his air transport pilot’s licence (helicopter) in September, which is estimated to take a minimum of five months to complete.

He will continue to undertake engagements on behalf of the Queen and his charitable affiliations during this time.

His training will culminate in 14 examinations and a flight test.

The spokesperson added: “The job will build on the duke’s operational experience in the Royal Air Force Search and Rescue Force, which His Royal Highness completed in September 2013.”

As patron of mountain rescue he has joined the Lake District teams in an ascent of Helvellyn via Swirral Edge.