English Heritage:
Sites of Memory:
This site provides lists of buildings of historic significance relating to merchants, Black Britons and abolitionists from the late 16th to the early 19th centuries.
http://www.english-heritage.org.uk/server/show/nav.17483
The National Trust
Abolition of the Slave Trade
National Trust properties owned by mercantile families, such as Penrhyn Castle, have had their histories reinterpreted to reflect on era of the Transatlantic Slave Trade.
http://www.nationaltrust.org.uk/main/w-vh/w-visits/w-events/w-events-slavery.htm