Thanks for the reply T250, I'm well passed that part of studying.
I think it is very sneaky of NATS to make changes without atleast emailing applicants. My friend has found out only 3 days before their selection tests and although you are correct about the changes it would appear that there is alot of technical data for someone without a previous understanding of airspace stuctures etc to learn at such short notice let alone understanding what its all about.