DB777,
It's not a bad idea going to sit the aptitude tests. Personally, I did not, but looks as of G-SXTY is providing sound advice on it. From a personal view, I think if you have a reasonable understanding of mathematics and physics at a GCSE level and are willing to work you ass off while doing the ground school and flying you will be fine. There are obviously some personality attributes required as well, which most people will have.
G-SXTY comments are so true, in the respect of getting to work, if you can call it that, printing off the journey log, and knowing you are flying with a sound Captain, it really is a day out flying with a £50 million pound toy to play with, in the most professional way of course. It still makes me laugh, when you are briefing and skipper says 'do you want to drive to Amsterdam, or bring it back?'
. It's great.
Anyway, I digress, once again all the best with it, enjoy your PPL.