Hi my friend,
It seems me and you are on a similar boat, im just finishing my GCSE'S - only 4 left and then im going on to study at A-level.
I like you aspire to be a commercial airline pilot.
To make the first step i have chosen to start my PPL at Rochester airport to get an insight on what flying is like - whether it is for me or not and im lovin it. I am going to continue my PPL throughout 6th form and then start applying to different training centres.
CTC Wings from what iv seen looks preety good, it requires GCSEs and A-levels and from what iv seen on other posts it look preety good if you've got some flying experience. I would advise you look into this course if you havent already done so.
My advice to you would be do a bit of flying at your local airport and make sure its right for you.
Good Luck Ash.