The purpose of this paper is to describe pertinent non-medical circumstances around male-on-male sexual assault, and supplements the earlier article in this journal regarding forensic medical aspects of this population. As services (medical, policing and judicial) see more males they will need to adapt themselves to their needs as well as those of their female clients. St. Mary's Sexual Assault Referral Centre (Greater Manchester, UK) opened in October 1986. Up to May 2003 it had seen 376 male (370 individual clients) and 7,789 female cases (7,403 clients). Of these, significantly fewer males reported to the police than females, although this difference has disappeared in recent years. There were also significant differences between the sexes regarding relationship, number of assailants, and assault location. There were no statistically significant differences between the sexes for age of the client, and presence in the assault of weapons or additional violence.