GSK plc

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 when its consumer health business was separated as Haleon. Sells vaccines against shingles, meningitis and respiratory syncytial virus, medicines for HIV through ViiV Healthcare, respiratory and immunology treatments and oncology products, runs research sites in Britain, the United States and elsewhere and manufactures across the world.