Is it possible to resit the exam only and not go through the whole year/two years again?
Not sure whether this will make a difference but I left school two years ago but still have the relevent books so revision will be fine.
Also if you can do the exam only does anyone know where I can take Maths exams in the london/kent area?
Thank You
Yes you can, there is advice about being a private candidate on the relevant exam board's website. I think Pascal's College in Kent takes private candidates.