ARLINGTON, Va.--(BUSINESS WIRE)--Towers Watson & Co. (NASDAQ: TW), a global consulting firm, announced today that it will participate in the William Blair 35th Annual Growth Stock Conference. Roger Millay, Towers Watson’s chief financial officer, is scheduled to present at the William Blair 35th Annual Growth Stock Conference at 12 p.m. Central Time on June 10, 2015. A live webcast of the conference presentation will be available at the Investor section of www.towerswatson.com. Additionally