This thread started stating that VGS peeps may not need a CRB, other posters have stated that it probably isnt needed.
HELLO - given that the guys in the aircraft (AEF and VGS) are probably closer to the cadets for longer than the normal air cadet guys, I would say makes the answer obvious.
Simple answer - if you are civvy or serving you need a CRB to work with the cadets in an unsupervised role. That means that all the pilots in VGS or AEF have been fully vetted. Quite right too given the trusted position we hold.
Hope that helps and helps stop further theories.