It was good, my interviewer was pretty chilled so it was all good. I got asked "why Loughborough?", "Why Chemical Engineering?", and then he asked me to explain a practical I had done in Biology and Chemistry and the general science behind it, which was quite simple. And then he asked me about parts of my personal statement, e.g. I mentioned about How my Geography could link to Chemical Engineering on my Personal statement...he just asked me to ellaborate on that.
My interview questions were fairly simple and generic, but it really depends who interviews you. For example one guy when I was there was asked to differentiate cosx^2....thankfully I wasn't him haha. Yeah but really it's pretty relaxed