Grey London | 43,768 followers on LinkedIn. Famously Effective | We are Grey London. Our mission is to create Famously Effective ideas that move people, business, and the world forward—harnessing the power of creativity to solve business problems and deliver growth for the world’s most influential brands and companies such as P&G, Volvo, Haleon, The Coca-Cola Company, Vodafone Ireland and Helly Hansen. Grey has won a Grand Effie in every market it operates; Newsweek (2023) named Grey a Top 100 Most Loved Workplace, and in 2024 was ranked a top 10 Network by the Cannes Lions International Festival of Creativity.