I applied online. The process took 2 days. I interviewed at UBS (London, England) in Apr 2009
Interview
I experienced really good contact with HR before and during the interview process. I found the online resources to be engaging and pitched to the right level of understanding. The interview rounds were pretty much as expected - a presentation, a CV-based interview, a group task, an economics/markets interview. I felt relaxed at interview, and I think this showed.
The process took 2 days. I interviewed at UBS in Jan 2010
Interview
I went to UBS Sales and Trading Superday for their internship position. The day started off with a written test. We were given a practice test beforehand but the actual test was much easier than the practice one (surprisingly). Then, we all had five 20 minute interviews in a row. Each interviewer started off with the same 'tell me about yourself' question, then some asked brainteasers, some asked math questions, and some just grilled you on why you wanted to be in S&T.