Maybe I did not make myself very clearly Jack, of course I was referring to those LIVING with HIV in the UK.
The worst case scenario was some inner cities where 1 in 5 are affected.
The new infections are running about 60% of all people tested, and almost 80% of all men tested. These are epidemic rates, and if they were duplicated in the heterosexual demographic, society would disintegrate.

I take it that we agree that promiscuity and risk taking causes the high rates of transmission?
Marriage either homosexual or heterosexual is no guarantee of monogamy.    Monogamy is most likely in a traditional family environment.