I dont get it but then I'm only familiar with helicopter maintenance in Oz.
In Oz any mechanic that can work on a R22 can work on an Enstrom.
The same mechanic would need a hydraulic ticket to do a 47 or any piston heli with hydraulics.
Why would a UK helicopter mechanic turn away business in the form of an Enstrom?
I want an Enstrom in the UK ooop north one day.
OOW