A joint investigation by Finance Uncovered and amaBhungane.
The British peer and anti-corruption campaigner, who spoke out against state capture, is doing business with some controversial characters.
A top Free State official had over R25-million in properties when he died.
Revealed: What the Guptas did to earn their kickbacks.
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The amaBhungane Centre for Investigative Journalism is a non-profit company that develops investigative journalism in the public interest.