its not a big thing the test.
i know several pilots that have not pass the test, but gone onto completing there Frozen ATPL and fly for the airliners. but they had to work just that it harder.
here is some of cabairs test to look at...
Assessment and selection
click on the maths/physic to do there tests.
angles, trig, are a meant to be well used in oxfords test
go over the hard stuff on bbc revision side. use cabairs as a plat form.
aviation is all about test and one other thing. Money!!!!!
the cost is a big one!!!