Duncan is the Vice President of Business Development of Africa-focused Svenska Petroleum Exploration AB, a role he has held since 2007 after joining from Anadarko Petroleum. He currently manages exploration new ventures and portfolio management at the privately-owned E&P. He is a geologist by background and had previously worked with Hardy Oil and Gas and Lasmo in a variety of UK North Sea and International technical roles. Duncan has also worked in a commercial advisory capacity, most notably with Deloitte where he specialized in transaction support and strategy development for International Oil Companies, National Oil Companies and Private Equity.

Duncan holds a Master of Laws degree with Distinction in Petroleum Law and Policy from Dundee University. He also holds a MSc with Distinction in Sedimentology and a BSc in Geology from the University of London.