East of England Ambulance Service says it uses private services for overtime and spikes in demand.Read more
South Western Ambulance Service
A medical bike with life-saving equipment will not be withdrawn from service in Weymouth but its future is under review.
There had been some speculation on social media that the rapid response bike would be "pulled".
But South Western Ambulance Service Trust said it was still being used on an "ad-hoc" basis because only one paramedic is trained to use it.
A petition to save the facility had attracted more than 2,000 signatures.
South Western Ambulance Service staff reported 1,118 incidents of violence in the past year.