The rumour I heard was that the contract was/has gone to Sloane with a 109 Power. However, there seems to have been all sorts of pauses and changes of venue. As yet, I believe the operation has not started.
There have been changes in the Ambulance Trusts in this part of the world. New "trainsets" may be thought to be a good idea, but the realities of fundraising through a charitable air ambulance trust may not fit in with the wished/desired timescales of the new super-ambulance trust. Two of the counties covered by the new Ambulance Trust (Great Western) already have perfectly sensible air ambulances with an established fundraising setup.