<p>Cambridge is great for physics…but good luck getting in if you’re american. I applied this year and got pooled and eventually rejected. 
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<p>They expect you to have perfect AP scores and come out for an interview, so prepare for the rigorous application process if you end up applying there. It’s not impossible to get in, but then you also have the costs to look at (you’ll be paying overseas fees w/no financial aid from the uni)</p>
<p>I also know Oxford, while not having as strong as a program, allows interviews in New York for American applicants.</p>