This was a rare example of a THT 'gay and bisexual men' campaign that was designed to been seen by the general population.
One of the reasons that's rare is that advertising on, say, London Underground is considerably more expensive than in a scene magazine or given to workers to hand out at scene venues. (If you did actually want to reach as many gay and bisexual men in London as possible, places like the Underground and the Metro and Evening Standard newspapers is where you'd do it…)
The graphics here aren't particularly good quality, being in a low resolution even in the original PDF from tht.org.uk, despite being intended to be seen on A3 or larger posters.
This is particularly noticeable on the CHAPS logo, which is almost unreadable,* but it means that it was definitely part of a program to reduce HIV infection in gay and bisexual men that got about £1m of funding from the Department of Health every year.
It was recognised by Martin Kirk of the UK Gay Men's Health Network in giving evidence to the All-Party Parliamentary Group on AIDS as "an HIV campaign but it is a campaign targeted at prejudice against, in this case, gay men".
As we'll see, this was more correct than it should have been. Read more