Make sure you me tion the several thousand black slave owners and also that the first slaveholder in America was black.
Dont also forget to discuss the irish slave trade and the massive deaths and atrocities committed by the british to them, they did a super job at almost wiping them out as a people.
The British slave trade in whites also included Scots during the Highland Clearances and after the Jacobite Rebellions, along with poverty stricken and criminally convicted Englishmen and Welshmen, as well as Irish rebels. A good book on the subject is They Were White and They Were Slaves, by Michael Hoffman.