I finished at GTS recently. V Good establishment. More like a private tutors than a "sausage school".
It's Roger, Dave and Pete (all ex RAF) plus a couple of specialists for special subjects like POF(H) for us rotating types.
Notes - excellent.
Exam feedback - more then excellent.
Detail taught (you learn stuff that you remember not just get crammed) - excellent
People - excellent
A rare gem
h-r (v satis)
NB I see your ex RAF so you'd appreciate Dave's humour ....