In this month’s newsletter: for Caribbean scholars, the evidence of how deeply slavery shaped Britain’s wealth has never been in doubt. Plus, heritage walks in Manchester

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Welcome to this month’s Cotton Capital newsletter. I’m Ahmed Reid, coming to you from Jamaica, where I am programme manager for the Guardian’s Legacies of Enslavement team.

The recently published Register of British Slave-Traders, reported exclusively in the Guardian, lists 13,000 men and women who invested in and profited from the trafficking of more than three million enslaved Africans between 1563 and 1807.