mixture, if people are prepared to kill themselves in the name of their cause, a serious injury is nothing if it draws the victim.
I wonder if the ground based crews will be searching the rucksacks of casualties and other members of their party before the HRH AA arrives on scene, on the fens for example. You don't neccesarily have to get HRH himself if he stays with the aircraft, just those around him. This puts a different slant on the earlier jaytee post of "our paramedics are saying they would relish the opportunity to fly with HRH."
As for your comment of "surely they would have already taken the ample opportunities given to them during his SAR missions ?"
In the words of Bronsky Beat, It Ain't Necessarily So.
Being based on an isolated secure RAF station on Anglesey, with no way of telling if he is on SAR duty or not, is a bit different to an open civilian air ambo setup.