I will be doing a Conversation with him:
Stephen Jennings is the Founder & CEO of Rendeavour, Africa’s largest urban developer, with over 12,000 hectares (30,000 acres) of satellite city developments near high-growth cities in Kenya, Ghana, Nigeria, Zambia and Democratic Republic of Congo.
Link here. I also know Stephen from his time working on reforms in New Zealand, way back when in the early 1990s. Here are various links about Stephen. So what should I ask?
