Some of the U.K.’s oldest and most prestigious law firms—from Freshfields Bruckhaus Deringer and Clifford Chance, to Farrer & Co and Gowling WLG—had ties to slavery and colonialism, research has found.

A Law.com International analysis of the University College London (UCL) database on the legacies of British slave ownership unearthed several deep ties between those working in law and the slave trade as well as other historic exploits that perpetuated racism.