WPP: At a glance - Telegraph £10.4bn annual revenue £1.09bn profit 165,000 employees 3,000 offices 110 countries World's biggest advertising company WPP has been the world's biggest advertising firm in terms of revenues for five years, although it will be overtaken when Publicis and Omnicom merge. Focus on emerging markets The company has grown through acquisitions and expanding economies, largely in Asia and South America, although the US remains its biggest market. Diverse business WPP is known as an advertising company but it also has huge market research and PR divisions. Share performance The value of a WPP share has more than doubled in the last 10 years, against 55pc growth in the FTSE 100.