Hi Ned,
The Air Ambulance Service HEMS Aircraft cover
The counties of Warwickshire and Northamptonshire (Helimed 53), G-WNAS based at Coventry Airport.
The counties of Derbyshire, Leicestershire and Rutland (Helimed 54), G-DRLA based at East Midlands Airport.
And a dedicated spare, split between the two bases G-TAAS.
All are AW109SP .
Gary