Ian,
Don't worry about not getting the grades you want. You can always resit them to obtain the required ones. I hope this doesnt set you back much, as last time we spoke you were determined as ever to succeed.
You will get there in the end, a little set back such as this shouldn't worry you. If you can start your A levels - do so, and resit the GCSE Maths too in Novemeber (if you can still do this then).
Drop me an email if you want.
Best Regards,
Homer