Newmark Security Plc operates as an investment holding company. It provides electronic and physical security systems. It operates through the People and Data Management Division and Physical Security Solutions Division segments. The People and Data Management Division segment is involved in the design, manufacture, and distribution of access control systems, and the design, manufacture and distribution of HCM hardware only, for time-and-attendance, shopfloor data collection, and access control systems. The Physical Security Solutions Division segment focuses on the design, manufacture, installation, and maintenance of fixed and reactive security screens, reception counters, cash management systems, and associated security equipment. The company was founded on March 25, 1997 and is headquartered in London, the United Kingdom.