The North West Ambulance Service NHS Trust (NWAS) is the ambulance service for North West England. It is one of ten ambulance trusts providing England with Emergency medical services, and is part of the National Health Service, receiving direct government funding for its role.

Emergency medical services in the United Kingdom provide emergency care to people with acute illness or injury and are predominantly provided free at the point of use by the four National Health Services (NHS) of England, Scotland, Wales, and Northern Ireland. Emergency care including ambulance and emergency department treatment is only free to UK residents and a charge may be made to those not entitled to free NHS care.