Augustus Casely-Hayford is a force in London’s cultural scene, working as a curator, broadcaster and adviser with many organizations, including the Tate Britain, the Royal Shakespeare Company and the British Library. He created “The Lost Kingdoms of Africa” for the BBC; a six-part series for Sky Arts, “Tate Britain: Great British Walks”; and is working on films on landscape art. His book on Timbuktu and the rise of the Mali Empire will be published next year.