Vaccitech Plc is a clinical-stage biopharmaceutical company, which engages in the development of antigen-specific immunotherapeutics that induce T cells to treat chronic viral infections, autoimmune diseases, and cancer. It also focuses on the pipeline of both clinical and preclinical stage therapeutic, and prophylactic programs. The company was founded by Adrian Hill and Dame Sarah Gilbert in March 2021 and is headquartered in Didcot, the United Kingdom.