But back in 2000, when Kathy began her research, she had to go through the cases on microfilm, scanning the pages for mention of black people. I sympathise as I've spent plenty of time doing the same with parish registers! The advantage of this over the modern keyword search is that you get a feel for the source and the context- Kathy noted how other people were treated in court, so was able to understand the black experience better.
One of the great things about the Old Bailey records is that they're verbatim accounts of what was said in court, so you really hear people's voices coming through. One memorable quote came from Ann Duck, who is recorded as shouting during an assault: "Hamstring the dog that he may never run after me again!", another one that made us laugh was the woman who testified "he put his impudence into me"!
Chater concluded that black people in the long 18th century were pretty law- abiding, as she's found less than 200 of them appearing in some 54,000 trials. There were still some juicy stories to be told however- of highwaymen and footpads, theft, rape and murder. I was reminded of how extreme and sometimes gruesome 18th century punishments could be (see Hogarth's print above). We also learnt of Thomas Latham, possibly the first black police constable (c.1746). The case is copied on the excellent Black Presence website, here: http://www.blackpresence.co.uk/black-people-at-the-old-bailey/
Anyway, I'm not going to try to recount every case here. You'll have to look for them yourself on the amazing Old Bailey website, or check out Kathy's book, now in paperback.