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listen to, follow up, and learn from your leaders are best way to express your respects to them.

Mr. Henk Vietor

co-founder of Vitol Group

Mr. Henk Viëtor

Henk Viëtor is one of the most highly accomplished and widely respected Energy Sector professionals. Henk founded The Vitol Group, a Dutch energy and commodity trading company in August 1966.   Anchored to the foundations Henk laid, his leadership and strategic direction drove VITOL to become one of the largest independent, physical trading and petroleum production companies in the world.


Whilst Henk’s enviable reputation was made and won within Energy Trading, Henk also has considerable experience in oil and gas exploration, negotiating the rights for and leading the exploration of oil and gas in Ras Al-Khaimah, UAE and Louisiana, Oklahoma and Texas in the USA.


Officially semi-retired, in April 2020, Henk joined as a Board Director of and Consultant to Knight Sterling, developing and leading strategic growth initiatives.

Mr. David Brown

David Brown qualified as a Solicitor and has been a  Director of two Stock Exchange companies. He has extensive expertise in international mergers and acquisitions.


Originally specialising  within Commercial and Property law, saw David complete the acquisition, development and sale of significant UK retail and property brands, culminating in one of Europe’s largest property projects, Canary Wharf, London.


In 2003 David was appointed to Group DF, a major Ukrainian corporate, with responsibility for all oil and gas acquisitions and corporate structures a position he held for over 12 years.


David is Chairman of the Supervisory Boards of twenty-one Ukrainian gas distribution companies. As a Director of Knight Sterling, David is responsible for mergers, legal affairs and governance.

Mr. David Brown

Chairman of Supervisory Boards of twenty-one Ukrainian gas distribution companies.  

 Patience is a virtue. -- David Brown | 3rd Jun. 2022

Mr. Andy Chakrabarti

In looking for people to hire, look for three qualities: Integrity, Intelligence and Energy. And if they don't have first, the other two will kill you. 

-- Dr. Andy Chakrabarti

Mr. Andy Chakrabarti, Ph.D

Since 2020, Independent Consultant to RIZZO Associates in New Nuclear Power Project in Bulgaria, Partner in AWR Ltd., Peru, SCP Cleveland, Monaco and GEMS Mining USA.

Senior Consultant in Global Resource Development projects, NV5 Inc. USA (2015-2019)

Global Director, Mining, RIZZO Associates, USA (2011 - 2015).

Executive Director, O&G Exploration-Evalution (onshore & offshore) in East Africa, Somalia /Somaliland, Rova /Ophir Energy Corp. South Africa ( 2006 - 2010).

Senior Resource Development Executive, JCI Limited (Anglo-American Group) South Africa (2001 - 2005).

Operations Manager, United Nations Revolving Fund for National Resources Exploration (UNRFNRE), Southern Africa (1998 - 2000). 

Senior Scientist, Woodward Cycle, Inc. &  Dept of Energy , Washington DC,  High-level Radioactive Waste Disposal, Western USA (1994 - 1998)

Senior Mining  Executive, LONRHO PLC, UK, (1990 -19994) .

Chief Technical Adviser, United Nations Dept of Technical Cooperation for Development (UNDP/DTCD). Resource Development in Southern Africa (1981-1990).

Senior Economic Geologist, The World Bank, LCP II, in Colombia, Peru, Brazil & Argentina (1976 - 1980).

Exploration Manager, Siamese Tin Syndicate UK, Thailand and Malaysia (1972 - 1975).

Mine Geologist, Alice ARM Copper-Molybdenum mine, Kenecott Copper Corp, British Columbia, Canada (1969 -1971). 

Exploration Geologist, Canadian Geological Survey, Saskatchewan, Precambrian Geology Division  (1967 - 1969)

Ph. D. in Pure Science (Economic & Mining Geology), Durham University, UK, 1967.