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In page WPP plc:
"WPP's notable advertising agency company holdings include Grey, Ogilvy,[1] VMLY&R, and Wunderman Thompson.[6] WPP's digital company holdings include AKQA.[1] WPP's public relations and public affairs company holdings include Hill+Knowlton Strategies, BCW (Burson Cohn & Wolfe), and Ogilvy.[1] WPP's media investment management company holdings include GroupM, Mindshare, Wavemaker and Essence.[7] WPP's research insight and consulting companies include Kantar.[8] Hogarth Worldwide is a WPP-owned production company.[4] WPP-owned brand consultancies include Superunion (a combination of Brand Union, Lambie-Nairn, and three other brand consulting businesses)[9][10] and Landor.[1]
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