TC BioPharm (Holdings) plc American Depositary Shares. Replay the stock market charts of TCBP day by day, back to 2003. Open long and short positions without spending any money. TC Biopharm (Holdings) Plc, a clinical-stage biopharmaceutical company, focuses on developing immunotherapy products based on its allogeneic gamma delta T cell platform. Its product pipeline includes OmnImmune, an unmodified cell therapy used in the treatment of acute myeloid leukemia; and ImmuniStim, an unmodified cell therapy to treat COVID-19. The company was founded in 2013 and is headquartered in Motherwell, the United Kingdom.