Pigdog:
I do not teach on bank holidays - I just sometimes get bored.
I have in the past also worked for the CAA on the question database.
Our paths will undoubtedly cross again on this forum, and if you go to the right school they will cross in a classroom.
By the way, my specialist subject is Principles of Flight, but at RAF Central Flying School it was more aerodynamics. The two subjects are not the same.
Best of luck with your studies - it's a worthy profession.
JP