You really think an LSE person is going to do that? Don't be daft, I've met a number of people that went to LSE and they would not bother with his antics. One reason is that they have more important things to do such as work or a social life.
Send a complaint e-mail to LSE that he is disrupting the forums; sending suggestive messages to females and in some cases, abusing other members. Sorted.