Argon Electronics was established in 1987 and has since become a world pioneer in the development and manufacture of hazardous material detector simulators, most notably in the fields of military Chemical, Biological, Radiological and Nuclear (CBRN) defense. Simulators have applications from civil response to unconventional terrorism and accidental release and international treaty verification, with a growing presence in nuclear energy.

CSG UK PLC specialise in the installation, maintenance and support of security systems for companies and organisations throughout the UK and Europe. CSG UK supply and install comprehensive security systems for national chains and individual businesses in the form of: CCTV, Access Control, Public Address, Intruder Detection and EAS (Electronic Article Surveillance), Fire and Safes.

Harper Security Systems has a long-standing reputation as master craftsmen with experience in all types of security systems. Their specialised team undertakes work where they are needed.

Intelsec (Intelligent Security Limited) is based in Shefford, Bedfordshire, with regional offices in the UK, Middle East, South Africa, Australia and the USA. Intelsec is at the forefront of the design, development, manufacture and integration of advanced sensing and detection technologies particularly in the fight against illegal immigration and the threat of concealed improvised explosive devices (IED's) on vehicles.

Established in 1998 Netaccess Software Ltd, designs, manufactures and supplies innovative security solutions such as access control systems, asset tracking systems, ANPR systems, biometric systems and more. The company's products have been installed globally and are in operation within a wide range of environments; transport, military, banking, universities and government.

VisAccess offers comprehensive and cost-effective physical access control & attendance products ranging from single door to multi-door, multi-site solutions. VisAccess offers a wide range of access control products including: controllers, readers, keypads and accessories. VisAccess is part of Tyco Security Products, which is part of Tyco International Ltd.