Putting the Robinson V's Enstrom discussion aside...there is an official sales and dealer network for Robsinson in the UK. This is not the case for Enstrom as far as I'm aware.
I believe that somewhere in the past negotiations bewteen Entsrom and potential UK distributors fell through.
To buy a new Aircraft I'm guessing that you have to deal with Enstrom directly or a supplier in the US !?!