Beckenham Hospital was recently re-built and re-named Beckenham Beacon (no - it doesn't make sense, a beacon is obviously where you go when injured or sick) and during this work this sign appeared:
The implication is obvious - those with sexual health issues are unclean and have to use a different door to everyone else. However it gets better - look at the location of the sign:
Didn't spot it? Look at this picture:
The arrow for the Sexual Health Clinic points straight to a 'No Entry' sign. Need I say more?