Warren is a commercial lawyer who represents the European Sponsorship Association on the board of Sport Resolutions. He is an equity partner at global law firm K&L Gates. He heads up the Global Sports Practice at the firm, which provides a legal service to all parts of the sports sector with a particular focus on the business of sport. Warren has extensive experience over the last 20 years advising on a wide range of sport-related matters, particularly on the commercial rights side, involving some of the biggest events, governing bodies, media companies, sponsors, merchandisers, hospitality companies and agencies. For almost the same amount of time, he has been involved with the Institute of Sports Sponsorship and was a director for a few years before it merged with ESCA to form the European Sponsorship Association. He is still on the Board of ESA.
Warren is a member of the Panel Appointments and Review Committee at Sport Resolutions (UK).