Hey Baatezu,
There are a bunch of guys who've got into CTC with A Level History and French - that doesn't say much about their numerical skills. That's what assessments are for. At the moment I assume all you're worried about is that you've got the required academic qualifications to enter assessment. You need to find out if what you've got allows you to sit assessment because at CTC, OAA and many other sponsorships if you haven't got the 2 required A Levels you're not going anywhere. You should try and tick the boxes first and then brush up your maths and physics with a few tutor lessons in your weakest areas. If you don't have to spend 2 years taking GCSEs and then A Levels then why bother? Ok - it'll give you a great Mathematical and Scientific grounding for your assessment and course but on the other hand you could spend that time on the flying course with CTC etc. You'll never know if you don't ask so get out there and ask the FTOs! Just make sure they understand what you're asking them.
S88
n.b. GAPAN sit non biased assessments that might be of interest to you. You don't need A Levels and it'll more or less tell you if you've 'got what it takes' to become a Commercial Pilot.
http://www.gapan.org/careers/aptitude.htm might be worth a sniff..