Revenue Growth Leaders Attribute High Ranking to Hot M&A Trend

The Council of PR Firms' first ranking of agency income didn't deliver any surprises. Burson-Marsteller held onto to its No. 1 status by inching its worldwide revenue above the $258 million mark. Next were WPP-owned Hill & Knowlton ($206 million) and Omnicom-owned Porter Novelli International ($183 million).