I did my tests last week and am awaiting the results. They don't send practice examples throught the post anymore, I bought an IQ test book and worked through those, not all of them are that relevant, but still quite a few are, I think this is your best bet. The tests were just like the examples on tiscali, except they got a lot harder as you went along. Practice your mental arithmetic and learn the ATC info well.
Good Luck