Are back at the British Library in london. We have got another five witnesses who have shared their personal memories of history. This month on the programme, the israeli lawyer who prosecuted the architect of the holocaust. A chinese archaeologist who worked on the statues of the terracotta army. And the son of Charlie Chaplin invites us into his home. But first, we are going back to the 1980s. The beginning of the hiv aids outbreak. At that time, stigma about the condition was rife. But in 1987, Princess Diana agreed to make a highly symbolic visit to the first hiv aids unit in britain. Our first witness, the first hiv aids unit in britain. Ourfirst witness, John The First hiv aids unit in britain. Our first witness, john oreilly, was a nurse at the unit who welcomed one of the most famous women in the world. For every person affected by hiv aids around the world, it was a major moment. It was amazing. Officially, the princess was simply opening the first hiv aids ward in britain. Bu