The East of England Ambuance Trust has announced it is putting 15 more full-time ambulances on the roads from Monday. It follows months of criticism over poor response times and cuts to services.
There will also be a recruitment drive for 200 more frontline staff.
The dramatic announcement - which affects ambulance stations in Essex, Cambridgeshire, Norfolk and Suffolk - came just hours after the latest protest over planned cuts in North Norfolk.
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Showers dying out during this evening to leave a dry night with some long clear spells leading to a frost by morning. Lows -1 deg C
A protest march has been held in Huntingdon over plans to merge two local hospitals to save money.
A protest march has taken place in Huntingdon over plans which could see Hinchingbrooke Hospital merge with Peterborough City Hospital