<p>OP, I think you have decent stats, though bear in mind on UCAS you can only choose one from either Oxford or Cambridge, not both. Plus, UK degrees tend to be quite specialized, so you would have to choose between chemical and electrical (which are quite different), unless you manage to get into Cambridge, where you can take general engineering courses in first year before specializing later on. Your grades look great, so it would come down to how you perform in the interview (though some UK schools may not do interviews outside the EU). Put those ECs and how they relate to your intended major in the personal statement, get good references and you should be fine.</p>
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<p>UCL does have an engineering faculty, and quite prominent at that. Though of course, probably less well known in North America than in Europe. I would especially recommend the electronic and electrical engineering department here.</p>