Like mentioned, it is far easier to give an FAA Instructor some standardization training then getting a JAA Instructor without FAA licenses/ratings.
Can't help thinking that CAA are allowing FAA to take the pi$$ out of JAR instructors here (how come an FAA instructor can avoid all of the crap that a JAA instructor has to go through and teach JAR syllabus with a form filling exercise ?) - So why can't we have reciprocal rights to teach FAA in UK ?? Hey that would even the playing field a bit !
I enquired about this at my school in Florida and they said they wouldn't employ UK instructors as it wasn't worth the hassle with visas etc when they can get a steady flow of US instructors from Embry Riddle etc
Suspect that the school was JAR/FAA in central Florida near Disneyworld ?