UDG Healthcare PLC provides healthcare services in North America, Ireland, the UK, and continental Europe. The firm operates in three segments: Ashfield Commercial and Medical Services, Sharp Packaging Services, and Aquilant Specialist Healthcare Services. The Ashfield Commercial and Medical Services segment generates the majority of revenue. This segment provides services related to sales and marketing, communications, event management, and medical and regulatory affairs. The Sharp Packing Services segment provides commercial and clinical trial packaging services to healthcare companies. The Supply Chain Services segment, which includes Aquilant, is made up of healthcare logistics companies. The largest proportions of revenue are generated in the United Kingdom and North America.