Leigh is an experienced international lawyer. Having spent many years as a leader and partner in leading international law firms, as well as in-house, his client portfolio comprises governments, companies and high-net-worth individuals on matters involving international development and project finance, production supply ventures, and commercial and compliance issues. In addition to counselling companies and governments in the development and financing of large-scale projects involving infrastructure, power, oil and gas, and petrochemicals, he acts for a wide range of businesses in building relationships with foreign governments and quasi-governmental entities, with a focus on the Middle East, Africa and China regions and the trade and business relationships between such regions. He also advises companies and professions on roll-outs (and, where appropriate, retractions) in the Middle East and Africa.