It wasn't bad. It was mostly simple questions. Mostly behavioral but I think it depends mostly on your interviewer. I got asked a couple questions based on my past knowledge
I applied online. The process took 2 days. I interviewed at UBS (London, England) in Apr 2010
Interview
Begin with a 40-minute numerical test(standard SHL I would say and much harder than the 20 min online test). If succesful then: One 1:1 interview, 1 group exercise and 1 presentation (Baisc SWAT analysis)
Overall firendly employees and willing to help along the process. Rejected because was ''not enough enthusiastic during the group exercise'' so do keep this in mind.