Tracey Appleton is Head of Development Services at Lonza's Slough site, a center of excellence for mammalian biologics development. Having begun a career with Takeda Ireland, Tracey has spent more than two decades at Lonza, building broad experience across cell culture development, commercial development and sales, and program management. In 2023, Tracey was appointed Head of Development Services, where she leads initiatives focused on continuous improvement, customer-centric development strategies, and operational excellence. Drawing on extensive experience spanning scientific, commercial, and program leadership roles, Tracey brings a unique perspective on accelerating biologics development while supporting long-term program success.