DS is in year 12 and last month attended the LSE open day. He liked the place and the department seemed nice. He told me (and showed me the talk recordings) that one of the professors giving the talk was saying they are a "top tier research university" etc. DS told me the professor briefly mentioned something along the lines of "we write the textbooks the second tier universities use". Apparently the professor mentioned Oxford and Cambridge as being 2nd tier.
To me it seemed as if the professor is arrogant.