Described as "A centre of excellence" by the MHRA - ESMS Global LTD, formerly part of the Guy’s Poisons Unit, is a niche service provider based in central London. We provide a 24/7 emergency medical response service for Clinical Trials and Medical Information to many of the worlds leading pharmaceutical companies. With global contracts across 80 countries, speaking 45 languages, our background and culture is built on providing support in emergency situations. We focus on patient safety creating a reliable and robust solution for your business.