Awesome on the GRE score! Mine were less than stellar. I got a 160 Verbal, 150 Quantitative, and a 5.0 on the writing. However, I did not study beforehand at all and went in completely blind. I'm going to study like crazy and retake the test. What are some study methods that worked for you? Was it mostly the practice tests?
Also, what is your focus/specialization in Art History? I know you come from a History background, but it would help to know about your interests to weigh options between the UK and US.