Sean William Sloan

Tennants Consolidated Ltd. operates as holding company. It manufactures and distributes chemical products. The company was founded in 1797 and is headquartered in London, the United Kingdom.

Symetrica Security Ltd. provides advanced isotope detection and identification technologies for the homeland security market. The firm works with contractors and government agencies to design, develop, test and deploy detection equipment for use by law enforcement personnel, customs officers, the emergency services, military personnel and first responders. The company was founded by David Ramsden, Grant Crossingham, Matthew Dallimore and Brian George Lever in 2002 and is headquartered in Southampton, the United Kingdom.