Long, unnecessary questions, brain teasers as if it were a quantitative economics role. Occasional condescending blank stares but I'd say still modest for the most part, just wish they asked more questions specific to the role and not the broad questions. There was a phone screening to begin with and then I was interviewed in a Pret a Manger (not very professional in my opinion but then again their office is a bit stuffy). Interview was easy but long. Received offer by the next week.