The British government at the time took out a loan to pay off slave owners across the Empire, a sum that was only finally paid off in 2015.
That’s to fall for Osborne’s party trick. The Consols were paid off, yes. But they were paid off by issuing new bonds. After all, UK govt debt did increase by £62 billion that year.
We’re still paying the interest on that £20 million bribe used to free the slaves.