From the project: "At the core of the project is a database containing, first, the identity of all slave-owners in the British colonies at the time slavery ended and, second, all the estates in the British Caribbean colonies. As the two earlier phases of work unfolded, we amassed, analysed and incorporated information about the activities, affiliations and legacies of all the British slave-owners on the database, building this Encyclopedia of British Slave-Owners."

The Center also relies on crowdsourcing, calling on the public and other institutions with information on British Slave-Holders to contribute to their project.