Burroughs Wellcome and Glaxo merged in 1995 to form GlaxoWellcome . [ 4 ] In the same year, GlaxoWellcome opened its Medicine Research Centre in Stevenage . [ 4 ] Three years later GlaxoWellcome bought Polfa Poznan Company in Poland. [ 4 ] [ edit ] SmithKline Beecham In 1843, Thomas