OK. I think it would be worth you consulting the Medical Branch at Gatwick. Have a look here:
Vision | Medical | Safety Regulation
to see if there is anything of use. If you still have queries, telephone them; they are very helpful and may be able to give a definitive answer. Although your local optician/ doctor may be happy with your eyes, the aviation requirements are somewhat more stringent.
As for recommending one of the colleges, I hope someone else will respond as I have no knowledge of the current situation.