HomeOur impact

Our impact

We are here to assist everyone who lives, works, or is travelling through the region. Our free life-saving service is provided 24/7 by helicopters and by rapid response vehicles (RRVs) in the hours of darkness.

Our impact

Our Impact

On average, we treat 1,000 patients every year, with our HEMS team dispatched approximately six times per day across Essex, Hertfordshire and surrounding areas.

We strive to save lives, reduce or prevent disability, or suffering from critical illness and injury, by delivering a first-class pre-hospital emergency medical service, but we rely on the goodwill and generosity of people and businesses in our local communities to keep our life-saving service operational. With two helicopters and a fleet of rapid response vehicles (RRVs), our life-saving service is available 24 hours a day, 365 days a year. Each base works a twelve-hour helicopter shift when daylight hours allow. The shift continues in a rapid response vehicle (RRV) when daylight hours are reduced.

Discover the impact of your support

The life-saving, critical care our teams deliver is only possible with your support. You can learn more about the charity, our crew, missions, airbases and fleet below.

Patient Visit, father holding daughter as they watch the helicopter
Centre of Excellence meeting

Centre For Excellence

A world-leading community through which pre-hospital care is developed to achieve the best outcome for people in our region and beyond.

Mission Reports

Discover our map of missions across Essex, Hertfordshire and surrounding areas and read our latest reports.

EHAAT Pilots map tablet
Emergency dispatched call centre

How We’re Dispatched

We’re dispatched by the East of England Ambulance Service NHS Trust, when a critical care paramedic and dispatcher determines the need for the specialist skills of the HEMS team.

Our Crew

Each critical care team consists of a pilot, co-pilot, pre-hospital care doctor and a critical care paramedic, ensuring a rapid response and outstanding patient care.

Doctor and Paramedic walking to the helicopter to start a mission
Pilots view from the helicopter


With two helicopters (the charity-owned AW169 and released MD902), Essex & Herts Air Ambulance can reach the furthest parts of Essex or Hertfordshire in under 20 minutes.

Rapid Response Vehicles

Our Volvo XC90 Recharge plug-in hybrid SUVs carry the same life-saving equipment as our helicopters, giving our crews an alternative way of attending patients in the quickest time.

Rapid Response Vehicle on the move
North Weald airbase entrance


We operate from our Earls Colne and North Weald Airbases, providing optimum cover across Essex, Hertfordshire and surrounding areas 24 hours every day of the year.