Studying abroad, what to get?

[spikitti]

I am applying to Central Saint Martins for grad school which is in the UK. As a resident of the US, what do I need to study there? I have a visa, but I need a student visa right? They are taking forever with sending a decision so I want to go ahead and get stuff together just in case. How long does it usually take to get everything one needs to study in another country? Anyone go there?

Thanks!