Almost 100 years ago, Chris Stephenson’s American grandparents came to Kenya as missionaries. Now Mr Stephenson, as regional partner for Africa at McKinney Rogers, is preaching the virtues of improved business performance to the receptive ears of east African corporate clients.

Mr Stephenson set up the London-based consultancy’s Nairobi office last November, after 20 years away from Kenya, including 13 years working around Africa for Guinness and Diageo.