GlaxoSmithKline (United Kingdom)

British pharmaceutical and vaccine company with headquarters in London, formed in 2000 from the merger of Glaxo Wellcome and SmithKline Beecham and renamed GSK plc in 2022. Sells vaccines against shingles, meningitis and respiratory syncytial virus, HIV medicines through ViiV Healthcare, respiratory, immunology and oncology treatments, runs research sites at Stevenage, Ware and Upper Providence and manufactures at Barnard Castle, Ware, Montrose and other British plants.