Cello Health Plc provides strategic marketing services. It operates through two segments: Cello Health and Cello signal. The Cello Health segment provides market research, consulting, and communications services principally to its pharmaceutical and healthcare clients. The Cello Signal segment provides market research and direct communications services principally to its consumer facing clients. The company was founded by Mark Coleridge Scott and Kevin Barrie Steeds on May 5, 2004 and is headquartered in London, the United Kingdom.