Just to note, it cost me £195 for the Skills Assessment at OAT, which I took middle of November 05. Descriptions above match my 2 days. I passed first time and starting AP258 27th Jan
(Went for my Class 1 after SA, which cost me £337 but got a rebate of £44 after passing, perhaps because I already had a Class 2 i.e. reduced admin costs??)
I would say the Maths was higher tier GCSE and physics would be triple science GCSE, perhaps some not covered at double science GCSE (??) and hence a flick through an AS Physics book would not go a miss. Obviously time since you were last "in school", I would guess, would determine amount of revision required?
Good luck to everyone else taking SA,
Jonathan