The East of England Ambulance Service, criticised over poor response times, is to take delivery of 120 new vehicles.
The first will go into service in Norfolk, where cover has been described as poor by health watchdogs.
The aim is to have no ambulances over five years old.
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Mostly dry and bright although much cooler on Monday.
Dry and bright to start, turning cloudier with rain later
Heavy showers quickly clearing leaving a sunny morning