They've been credited with increasing the chances of surviving a serious injury by up to 20 percent.
But charities like the East Anglian Air Ambulance and Essex and Herts Air Ambulance receive no government funding, and rely entirely on donations to keep going.
Jonathan Wills and Elodie Harper spoke to Diana Jakubowska from the East Anglian Air Ambulance about how they manage to fund their work and keep flying.
More top news
Anglia Television's longest serving newsreader John Bacon has died at the age of 83.
The mothers of two three year old boys with Down's Syndrome from Norwich are begging people not to stare at their sons or give them labels.
From humble farmhouses to great stately homes and historic churches, East Anglia is littered with buildings falling into ruin.