Coming back at this since there has been no reply from Cuillin: In the days before the internet there is no doubt that the RAF guys perhaps had the advantage of crewroom banter, or scroggs's "grapevine", to get a vague idea of what they were in for, but certainly not detailed info such as "interview questions" and" maths tests". From memory the Company sent the sim profiles out to everyone selected to go forward to that stage of assessment ( I'm talking late 80's

)
Nowadays with the www and forums such as this I reckon its a fairly level playing field.
Seems to me, Cullin, you are suggesting something more underhand so come on, you ran this up the flagpole, how about an answer?