Leading UK pharmaceutical and biotechnology companies ranked by market value 2021

This statistic shows the leading pharmaceutical and biotechnology companies in the United Kingdom (UK) as of 2021, based on market capitalization. As of September of that year, GlaxoSmithKline (GSK) ranked second highest on the list with a market capitalization of nearly 72 billion British pounds. First was Anglo-Swedish firm AstraZeneca with a market capitalization of around 127 billion British pounds.

GlaxoSmithKline is a British pharmaceutical company with its headquarters based in London, United Kingdom. The company manufactures products for major disease areas including respiratory disorders such as asthma, oncology, immuno-inflammatory disorders, cardiovascular diseases, as well as manufacturing vaccinations. One of the most successful drugs manufactured and patented by GSK was Seretide/Advair which is used in the treatment of asthma and chronic obstructive pulmonary disease (COPD). However, until 2020, sales of the drug Seretide/Advair dropped to 450 million British pounds in Europe.