Diezani Allison Madueke: The queen of graft

If boasting about institutional academic prowess is anything to go by, Diezani brandishes Cambridge degree and a portfolio of senior government positions in her native Nigeria. She is also the first female President of the Organisation of Petroleum Exporting Countries (OPEC) oil cartel.

Such was her influence that in 2015 British government placed her top of a list of former recipients of the Chevening Scholarship for future leaders of foreign states. The Chevening Scholarship will this year embrace our Tshepo Maphanyane amongst others.