Where is the executive office of the company of which Young & Rubicam is a member?
Young &amp; Rubicam:  It is a member of WPP, the largest advertising group in the world. WPP plc: WPP plc, (Wire and Plastic Products) is a British multinational advertising and public relations company with its main management office in London, England, and its executive office in Dublin, Ireland.
Dublin, Ireland