Lester Kemp graduated in 1990 with a Master's Degree from the Royal School of Mines, University of London, and went on to work with GeoScience Limited in Ascot before running a gold exploration camp in Guyana for Canarc Resources of Canada.
After completing his MBA, Lester worked with various junior resource companies operating throughout Africa, Europe and Scandinavia. Lester was part of Canadian-listed Redaurum Limited which operated the River Ranch Diamond Mine in Zimbabwe and the Kelsey Lake Diamond Mine in the USA. Lester was co-founder and Managing Director of Mantle Diamonds Limited which operated two diamond mines in Africa (Lesotho and Botswana).
Lester was also a Non-Executive Director of Levin Sources, a consultancy and social venture company involved in advising international clients on responsible and sustainable mining.