Photography GCSE and A Level..Watch
Interestingly though, he dropped it due to the workload. It's worth keeping that in mind...not having GCSE experience can really disadvantage you in terms of preparing for the a-level version.
In my school they didn't offer GCSE Photography, so most people that do it now have GCSE Art, but some don't. You'll have to ask your school, they're the only people that will know. But, at my school you could do A-Level Art without having done the GCSE as long as you could prove you were actually any good at it, by providing some sort of portfolio.