British Slave Ownership Database
This is a handy free web-site, run by UCL and located at https://www.ucl.ac.uk/lbs/, which has records of how much slave owners were recompensed for their slaves, as well as names of businesses which gained from the process. Some of the sums of money were enormous that were paid out, Benjamin Caractacus Patey, who once lived in Norwich, got the equivalent of around £250,000 for the loss of his slaves. Companies such as Greene King are listed and there are maps of some of the slave estates.
It’s an interesting genealogical tool, although at the moment, it’s primarily of interest for finding out more about the slave owners than the slaves themselves. The project co-ordinators are though working on this for the next iteration of the project. It’s all been nicely put together as well.