Three ambulances have been destroyed in a fire outside the East Surrey Hospital in Redhill.
The fire started in a parked ambulance outside the east entrance to the Hospital before spreading to the other two vehicles.
Huge plumes of black smoke could be seen rising into the air at the height of the fire.
Surrey and Sussex Healthcare NHS Trust said there were no patients involved and everyone was safe.
The hospital was closed to emergencies, and patients diverted through the South East Coast Ambulance Service.
Fire crews, who were called out at 2:20pm on Monday afternoon, managed to bring the fire under control and the hospital re-opened shortly after 6pm
