Men who have sex with men (MSM) is a term used to describe gay men, bisexual men and other men who have sex with men. It is estimated that 1 in 20 MSM in the UK has HIV, increasing to 1 in 11 in London (1 in 28 outside of London).

How many men who have sex with men in the UK are living with HIV?

In 2014, an estimated 45,000 MSM with men were living with HIV in the UK, of whom 6,500 (14%) were unaware of their infection.

How many men who have sex with men who live in the UK are newly diagnosed with HIV each year?

In 2014, 3,360 men who have sex with men were newly diagnosed with HIV, which is the highest number of new HIV diagnoses ever reported among this population. Overall, men who have sex with men accounted for over half of new diagnoses (54%).

How has this been changing over time?

Significant numbers of men who have sex with men are being diagnosed with HIV each year in the UK. In the last decade the number newly diagnosed has increased from 2,423 in 2004 to 3,360 in 2014. Increased number of diagnoses amongst this group reflects both on-going high levels of HIV transmission and an increase in HIV Testing. There is no indication that HIV incidence among MSM is decreasing. - See more at: http://www.nat.org.uk/HIV-in-the-UK/HIV-Statistics/Latest-UK-statistics/Men-who-have-sex-with-men.aspx#sthash.bEVykZu7.dpuf