yeah, don't get too hung up about it, its largely a product of legacy. there are some on here and in other places which will argue that a BSc is a more science based course than a BA, but its questionable. the course title was generally decided years ago, the nature of the course, the professors, the focus changes. cardiff for example, is a BSc, because it was a technical college back in the day, before becoming a university course. that's not to say we are going around with white coats on and microscopes.... - its probably more concerned about art than science, tbh. there are loads of examples of such inconsistencies at courses all over the UK - so i wouldn't waste too much time about those letters. far more important is the course content.