evidence: During 2017, new diagnoses among all people fell by 17% on the previous year. In gay men they have fallen from 3390 in the peak year of 2015 to 2330 in 2017 – a 32% decline, as already reported on aidsmap.com. Diagnoses have fallen relative to 2016 in every area of the UK, with a particularly sharp fall in Wales. The exception is Northern Ireland, but numbers there are low and this region has also experienced a significant decline in diagnoses since 2011. Diagnoses have fallen among every sexuality, gender and ethnicity group, not just in white gay men. There are two groups among whom a fall in diagnoses is new. One is white heterosexuals – diagnoses among men fell 31% and among women by 16%, relative to 2016. The other is black and minority-ethnic gay men, in whom diagnoses were previously not falling. Last year, they fell by 57% in black men, 22% in Asian men (where they had been significantly increasing), and 36% among other/mixed ethnicities. Diagnoses also fell among heterosexuals of African and Caribbean ethnicity who were born in the UK. [...] Significant proportions of some groups are now diagnosed outside of GUM clinics, including women (38%), people of black African ethnicity (38%), people who inject drugs (52%), people over the age of 50 (42%) and people diagnosed late with HIV (41%).