He is a former lawyer and was a partner of Freshfields for many years , where he founded and managed the Brussels office and co- led the global competition practice. Prior to Freshfields, John worked as a case officer in the European Commission's Directorate-General for Competition.
John has received awards including Antitrust Lawyer of the Year and Antitrust Lifetime Achievement Award both from Global Competition Review. He is a vice-chair of the International Policy Committee of the American Bar Association and chairs an annual conference on foreign direct investment.