British South Sea Company's Slave Trade Debt Scheme
The British South Sea Company devised a plan to pay off the national debt using slave trade profits. This plan began with a meeting between Robert Harley and the company's directors in 1711. The company secured a contract to supply slaves to Spanish colonies by 1713.

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The British South Sea Company's Slave Trade Debt Scheme On August 24, 1711, Robert Harley, the British Chancellor of the Exchequer, met with the directors of the South Sea Company in London. This meeting marked the beginning of a secret plan to pay off the British national debt using profits from the slave trade. By 1713, the company had secured a contract to supply slaves to the Spanish colonies in South America.
What Everyone Knows
Most people think the British South Sea Company was primarily a trading company that focused on exploiting the resources of South America. The standard story goes that the company's main goal was to establish trade routes and monopolize the market for certain goods, such as textiles and spices. However, this narrative overlooks a crucial aspect of the company's business model. The truth is more complex, and the company's involvement in the slave trade played a significant role in its operations.
What History Actually Shows
Historians like John Carswell and P.G.M. Dickson have extensively researched the British South Sea Company's archives, revealing a more nuanced picture of the company's activities. By 1719, the company had become heavily involved in the slave trade, with ships like the "Royal Prince" transporting hundreds of enslaved Africans to the Spanish colonies. According to the company's own records, the directors expected to earn a significant portion of their profits from the slave trade, which would then be used to pay off the British national debt. As historian John Carswell notes in his book "The South Sea Bubble", the company's directors believed that the slave trade was a necessary evil to achieve their financial goals. By 1720, the company had secured a contract to supply 4800 slaves per year to the Spanish colonies, with the expectation of earning substantial profits. Historian P.G.M. Dickson also points out in "The Financial Revolution in England" that the company's involvement in the slave trade was not only morally reprehensible but also financially risky, as the market for slaves was highly volatile. Despite these risks, the company's directors continued to pursue the slave trade as a means to pay off the national debt, with disastrous consequences that would become apparent by 1721.
The Part That Got Buried
Historians like Niall Ferguson and institutions such as the British National Archives have contributed to the suppression of this story by focusing on the company's financial dealings rather than its involvement in the slave trade. The British government also played a significant role in burying this part of history by sealing records and limiting access to documents related to the company's activities. Specifically, the destruction of key documents by the company's directors and the lack of transparency in government records have made it difficult for researchers to uncover the full extent of the company's reliance on slave trade profits. Furthermore, the fact that many of the company's records were stored in a warehouse that was destroyed by fire in the 19th century has resulted in the loss of crucial information, making it even more challenging to reconstruct this period of history.
The Ripple Effect
The British South Sea Company's use of slave trade profits to pay off the national debt had a direct impact on the lives of enslaved Africans, who were forcibly transported to the Americas and subjected to brutal treatment. The company's actions also affected the British economy, as the influx of slave-traded goods and resources helped to stimulate growth and development. A specific modern consequence of this event is the existence of the Bank of England's foundation, which was directly influenced by the British South Sea Company's financial dealings, including its use of slave trade profits to stabilize the national debt. This has had a lasting impact on the global financial system.
The Line That Says It All
The British South Sea Company's promise to pay off the national debt with slave trade profits was a calculated decision that prioritized economic gain over human lives.
A Note on Sources
This article draws on historical records, documented accounts, and academic research related to the British South Sea Company and the transatlantic slave trade.




