Reports have been made about this PN poster from several ladies who wish to remain anonymous. It is believed he has been spoken to by the police for generally harrassing girls but this is unconfirmed.

No specific warning has yet been put up anywhere but this post by a fellow client who did a booking with New Yorker gives his MO:

http://www.punternet.com/forum/showpost.php?p=307363&postcount=130

As the post implies Punternet mods may have more info.