emergency services 
plural noun British
The public organizations that respond to and deal with emergencies when they occur, especially the ambulance service, the police, and the fire brigade.The final emergency service to be considered is the ambulance service....
- As riders and spectators arrived at Howden Wood, many gave generously to the Yorkshire Air Ambulance, the emergency service which money was being raised for at the event.
- In the face of such a large-scale violent incident, why did the Dingzhou emergency service and the police arrive so late?