Try Andy Tailby, Rotary Wing Department at DERA Boscombe Down. He's now a civilian trials officer, but did EPNER whilst a RAF helicopter pilot in the '80s. He may in turn know somebody who has done the course more recently.
Speak lots of French before you start the course.
And Good Luck. Whenever the workload is heavy, remember that at the end you'll be doing the best job in military flying!