FTSE 100 firm Intertek is one of the largest and oldest companies in the testing, inspection, and certification industry. The company's primary activities involve testing products and materials, inspecting sites/industrial equipment, and certifying products and systems to ensure global/company standards. Intertek is one of only four TIC companies that operate globally across numerous industries. The firm listed in 2002, following a divestment by Charterhouse. It employs more than 44,000 people worldwide.