Duncan was founder and managing director of Liberty Shared, a leading NGO that focused on anti-human trafficking, GBV, modern slavery, wildlife trafficking, and environmental crime. In 2023, he received a Certificate of Merit from the World Customs Organization for the first of its kind investigation by the U.S. Department of Justice and Homeland Securities Investigation and successful settlement addressing forced labor in the global supply chain of a Fortune 500 company, Goodyear Tire and Rubber Corporation. He led successful actions to ban the import of palm oil from Malaysia and sugar from Dominican Republic into the U.S. (both bans now lifted). He was recently runner-up to win the Financial Crime Fighter of the Year 2023 awarded by the Global Coalition To Fight Financial Crime. Liberty Shared worked closely with Asia Pacific Group providing typologies and training to FIUs. He was chair of Freedom Collaborative Inc. (now its own organization), an online platform which he created in Liberty Shared in 2014. He founded Project Share which provided programs to increase social mobility for youth in disadvantaged areas of Hong Kong and created the Society for Children’s Education in Asia, funding girls’ education in Afghanistan and youth education in Cambodia and Nepal.

Duncan has recently joined the faculty at USC Dornsife Wrigley School Institute of Environment and Sustainability, instructing the masters in sustainability management. He taught policy entrepreneurship at Princeton University for four years and strategic leadership at the Eisenhower School at the National Defense University. He is also an affiliated scholar at Georgetown University’s Institute for the Study of International Migration, where he created an undergraduate course on corporate accountability and forced labor.

He was Head of Legal for BNY Mellon Investment Management Asia Pacific for four years and for nearly a decade was Regional General Counsel and Head of Compliance at ING Investment Management Asia Pacific, one of Asia’s largest investment businesses, responsible for M&A, governance, product development and internal investigation. In the 1990s, before becoming a corporate finance lawyer, he ran a supply chain consultancy based in the UK and China. He has a degree in accountancy and financial management, an MBA and is a qualified solicitor of England and Wales. He has written, produced and directed various novels, TV programming and award-winning films.