When the first cases of HIV broke out in the early eighties it was deemed a death sentence. Today life expectancy can be the same as the general population, and those on effective treatment can’t pass on the virus through sex. But the stigma remains, and older people can be particularly vulnerable. The Terrence Higgins Trust found a third of those aged 50 and over living with HIV were socially isolated and 82% experienced loneliness. On the 30th anniversary of World Aids Day, Cathy Newman spoke to three people who’ve been HIV positive for decades.