Vodafone Group plc /ˈvoʊdəfoʊn/ is a British multinational telecommunications company headquartered in London and with its registered office in Newbury, Berkshire. It is the world's second largest mobile telecommunications company measured by both subscribers and 2013 revenues (behind China Mobile), and had 434 million subscribers as of 31 March 2014.
Vodafone owns and operates networks in 26 countries and has partner networks in over 50 additional countries. Its Vodafone Global Enterprise division provides telecommunications and IT services to corporate clients in 150 countries.
Vodafone has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. It had a market capitalisation of approximately £89.1 billion as of 6 July 2012, the third-largest of any company listed on the London Stock Exchange. It has a secondary listing on NASDAQ. (Source: Wikipedia)