Millions of British Slavery Records Published Online

Nearly four million historical records detailing the lives of enslaved people across 20 former British colonies have been published in an online searchable database. Digitised from physical colonial registries, the collection enables descendants across the African diaspora to search for their ancestors by name without navigating physical archives.

Systematic Tracking of Enslaved Populations

The collection, known as the Former British Colonies Enslavement Registers, contains approximately 300,000 pages of documentation recorded between 1813 and 1840. The documents cover territories including Jamaica, Barbados, the Bahamas, Trinidad, Mauritius, and the Cape of Good Hope in present-day South Africa.

The British government created the registers following the abolition of the transatlantic slave trade in 1807. Designed to monitor enslaved populations and prevent illegal trading, colonial administrators logged individual details with exact precision. Entries recorded names, reputed ages, physical descriptions, family connections, births, deaths, and ownership transfers. The registers also distinguished whether individuals were born in Africa or the Caribbean and documented name changes, enabling researchers to trace lineage backward.

Digitisation and Academic Collaboration

Genealogy company Ancestry digitised and indexed the material in collaboration with the Centre for the Study of the Legacies of British Slavery at University College London. The original documents form part of the T71 series held at the National Archives in London.

By making the records searchable online, the project removes major physical barriers for researchers and families. Academic researchers testing the database on Jamaican registers have already traced several families across six generations.

Shifting Historical Focus to the Enslaved

The release follows the publication of the Register of British Slave Traders, a three-year project that identified up to 10,500 investors involved in transatlantic trafficking over nearly 250 years. Historians state the new registry project helps shift academic research from slave owners and institutions toward the lived experiences of enslaved people themselves.

Matthew J. Smith, director of the UCL center, called the records “the most systematic set of archival documents” on enslavement in the British Caribbean and wider colonial world. Smith noted that seeing specific names and family details “transforms how you understand the system” and helps uncover histories of survival and resistance.

Nicka Sewell-Smith, a professional genealogist and senior story producer at Ancestry, noted that records initially created to list human beings as property are now serving descendants. Referring to the impact of the project, Sewell-Smith stated that “Our product is restoring the humanity of a person.”

Background

Britain formally abolished its involvement in the transatlantic slave trade in 1807, though the institution of slavery itself continued across British colonial territories for decades. Full emancipation was not enacted across most British colonies until 1834, followed by an apprenticeship system that lasted until 1838. The registration records compiled between 1813 and 1840 were part of official efforts to oversee colonial labor forces during this transitional era.