The Excel/Thomas Cook testing is exactly the same as the Oxford Aviation testing called COMPASS. COMPASS comprises of 6 tests with one being 24 maths questions in 20 minutes. There is also a seperate Technical test which is 15 multiple choice physics questions with no time limit. Then to finish off you do a pyschometric personality profile.
Each COMPASS test is out of 7 and so your total score is out of 42. I dont know what the pass mark for Oxford is but for the Excel scheme it was around 33 although I heard they were looking for 36+. For the technical testing I believe for Oxford it's 10/15 but again I think Excel were looking for 12+
Hope that helps