Colin Johnson is a vice president at Charles River Associates who has over 25 years of project experience as an investor and adviser, and more recently as an expert witness. He acts in a mix of investor–state and commercial cases, combining his practical experience of having managed and invested in a wide number of projects with the experience of having worked on over 40 major disputes. He acts as an expert in English and Spanish, with other languages such as French, Portuguese and Italian also often a feature of cases that he works on.