The Warwickshire & Northamptonshire Air Ambulance service launched in 2003, with one Agusta A109E Power based at Coventry Airport. The aircraft, G-WNAA, was previously in the role of an air ambulance for the Thames Valley & Chiltern Air Ambulance service, registered G-TVAC and based at White Waltham. However a cash shortfall forced the TVCAA to switch to a lesser model, this being G-TVAM, an MBB Bolkow BO105 leased from Bond Air Services.
Previously, Northamptonshire had relied on the Thames Valley & Chiltern service as air cover, however due to the location of the base near Maidenhead this took some time to reach the county. Warwickshire was covered by the County Air Ambulance service. It was recognised that a dedicated service was better for the counties. Fundraising started in 2003, and the Agusta A109E started operations in October 2003.
3 years after the service had started, in October 2006, a new helicopter arrived, replacing G-WNAA. G-MEDS was in a livery of blue and yellow, and offered the same amount of speed and space as its predecessor. It served the two counties and surrounding areas for 18 months, before moving to East Midlands airport to operate for the Derbyshire, Leicestershire & Rutland Air Ambulance. G-WNAA returned to Coventry Airport in a livery similar to G-MEDS, and operated until February 2010.
In the summer of 2009 it was announced that both the WNAA & DLRAA operations were to get new Agusta aircraft to replace the current airframes, with the lease having been renewed. These would come with an updated medical role-fit, and in the case of the DLRAA aircraft, would be the larger variant of the A109E, the A109S Grand. The new WNAA A109E Power was registered G-RSCU in December 2009.
G-RSCU became operational in February 2010 and will remain operational for the foreseaable future.