They are or were a US company if I remember correctly. I did some time ago correspond via e-mail with their head office about UK supplies and received some promises that never materialised — such is life.
In any event I don’t know if the stuff they offer now is quite the same, but then what is? Everything changes and I did buy my last 5 gallon drum a LONG time ago!
I’ve not tried too hard to get more as I suspect that what I have will see me out but that doesn’t change the fact that it’s a b****y good 2-stroke oil!