Part 2 Background Emergency service: The emergency service are the public organizations whose job is to take quick action to deal with emergencies when they occur, especially the fire brigade, the police, and the ambulance service. The telephone number used in Britain foe calling the police, fire or ambulance service in an emergency is 999 in Britain And 911 in the usPart 2 Background ◼ Emergency service:The emergency service are the public organizations whose job is to take quick action to deal with emergencies when they occur,especially the fire brigade,the police ,and the ambulance service.The telephone number used in Britain foe calling the police,fire or ambulance service in an emergency is 999 in Britain And 911 in the US