John Christensen is a co-founder and director of the Tax Justice Network International Secretariat based in London. He was trained as both an auditor and a development economist. His current area of expertise is in tax havens and their impact on international development. Prior, he was as a company and trust administrator in Jersey, British Channel Islands (a prominent European tax haven) and served as economic adviser to the States of Jersey. He obtained an honors degree in applied economics and an M.Phil in economics and law (University of Reading). He completed post-graduate studies at Templeton College, Oxford and the London School of Economics and Political Sciences.