WPP broke into the growth column during Q3 as like-for-like revenues inched ahead 0.7 percent as CEO Mark Read works to achieve "sustainable growth" comparable to Interpublic and Omnicom by 2021.

Year-to-date revenues slipped 1.1 percent.

“Our growth in Q3 is encouraging but we are focused on delivering these longer-term goals and know there will be twists and turns along the way," he said in a statement.

Read cited pick-ups of Mondelez and eBay as major wins during the quarter and expressed gratitude that Centrica and the US Marine Corps stuck with WPP because they "value the depth of our understanding and the longevity of the relationship."

The Finsbury, Hill+Knowlton Strategies and BCW-led PR group registered a 0.9 dip in Q3 revenues to $288M and a 1.3 percent slippage to $667M for the nine-month period.

North America showed an overall 3.2 percent drop in revenues to $1.2M during the quarter, while western continental Europe posted a 1.8 percent gain to $663M and UK advanced 2.1 percent to $427M.