Derek Lynch 29 Dec 2022
Hans Wetzels 13 Jul 2021
Christopher Clark 7 Oct 2019
Cyril Nhlanhla Mbatha 1 Oct 2018
Nteranya Sanginga 31 Mar 2017
Professor Andreas Freytag 18 Nov 2016
Kingsley Ighobor and Ernest Harsch 24 Mar 2014
Gregory Gondwe: @Kalipochi 2 Nov 2011