SK,
I'm still waiting to hear if I'm going yet...
However, last year there were 2 mental maths papers and 1 mechanical comprehension paper (multi-choice) and as far as I know they're likely to be the same format this year.
The maths papers weren't hard but brush up on things like basic mental maths (tables, addition etc.) and more advanced stuff like trig and interpolation. What I did was get a GCSE Maths revision book and work through that to sharpen up. The second paper contained an aural section where the questions were read out with various lengths (between 10 and 30 seconds) allowed answering time.
Hope this helps and hope to see you there.
VTOL
