WPP is an international public relations and advertising firm with its headquarters in London, United Kingdom and its executive office in Dublin, Ireland. Counting revenue WPP is the world’s largest ad agency and employs approximately 162,000 individuals in 3,000 offices located in 110 countries. WPP is the owner of some of the best known advertising, public relations and market research networks including: Grey, Burson-Marsteller, Hill & Knowlton, JWT, Ogilvy Group, TNS and Young & Rubicam.
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