Lox, I do not agree with all your statements.

"We know that HIV is overwhemingly a heterosexual disease."
Yes, but only in Africa

"We know that in the UK it is proportionately the fastest growing disease (500%)"
Not meaningful in view of the fact that 500% only takes it from infinitesimal to miniscule.

"We know that the increase in the rate of growth is not linear."
It is linear. The rate of new cases has gone from around zero to a steady value (hence linear) that is still in the very rare disease category.

"We know that anal sex is only about twice as efficient in transmitting HIV as vagingal sex"
I do not accept your interpretation of those research results.

"We know that 95% of homosexual men have no HIV"
True.

"The evidence does not support your assertion that Homosexuality is a more unhelthy lifestyle."
Debateable

"There is evidence that homosexuals currently suffer disproportionately, but this is not the same thing as saying that homosexuality is unhealthy."
Agree