Science In Sport Plc engages in the development, manufacture, and marketing of sports nutrition products. It operates through the Science in Sport and PhD Nutrition segments. The SiS segment includes energy powders, isotonic gels, energy bars, and supplements, which are targeted at athletes and fitness enthusiasts. The PhD Nutrition segment markets whey powders, supplements, and bars which are aimed at sports enthusiasts and gym lifestyle consumers. The company was founded in 1992 and is headquartered in London, the United Kingdom.