WEB : www . astrazeneca . co . uk

Before it moved its headquarters to Cambridge in 2013 , AstraZeneca operated out of its native Sweden . Just under $ 21.7bn in revenue puts the company squarely in the middle of the top 10 European pharmaceutical businesses , even with a comparatively youthful age of 18 years - a line of successful acquisitions has helped to grow the company . These acquisitions include Definiens , MedImmune , Spirogen and Cambridge Antibody Technology . The company ’ s primary stock listing is in London . 31