Two ambulance trusts officially merge on Monday to give coverage across the West Midlands region.
Staffordshire Ambulance service is merging with the West Midlands service.
The decision to merge sparked a protest with 5,000 people signing a petition against it. It was feared response times would be affected.
The West Midlands service was formed in 2006 covering Coventry, Shropshire, Birmingham, Warwickshire, the Black Country, Herefordshire and Worcs.