e.g.
<<The Bank of England was set up in 1694, and underpinned the whole system of commercial credit, and its wealthy City members, from the governor down, often made their money wholly or partly in the slave trade. >>
<<Provincial banking across England only emerged in the 18th century, with Liverpool slave trading merchants forming Heywoods Bank, which later became part of Barclays Bank. >>
<<Copper, cloth, glassware, beads, ammunition, alcohol, guns and ammunition, and metal hand cuffs, leg irons, chains and manilas went from Britain to Africa. Enslaved Africans and indigo went from Africa to the Americas (ivory, gold and palm oil also came back to Britain). Raw sugar, rum, rice, coffee, tobacco and cotton went from the Americas back to Britain. >>
<<In the early days of the slave trade a group of merchants or what we would now call venture capitalists would finance a ship; over time more formal financial organisations including Lloyds and Barings banks were established for this purpose.>>
etc etc
It's good reading for anyone interested in the development of Great Britain and its Empire