Since its formation in 1989, Davies Security Group has been designing bespoke security systems for its clients from all areas of the marketplace. From standalone Fire, Intruder and CCTV systems to PC-based integrated solutions, Davies Security can provide for all specifications, incorporating the latest technology from the fast moving security sector designed individually to accommodate present and future security needs.

Davis Derby is a long established designer and manufacturer of intrinsically safe electronics and explosion-proof electrical equipment. Davis Derby supplies a specialised range of control and monitoring equipment products for use in the mining industry to improve safety and productivity in this hazardous industrial environment.

DC Solutions is a CCTV installer based in Luton.

Delta 5 Security specialises in providing security guard services in London and the surrounding areas. They also specialise in providing security industry-related training courses.

Delta Tec Alarms delivers high-quality alarm systems and reliable alarms to customers. The company advises customers on the products that best serve their security needs.

Demux Video Services Ltd is a leading forensic multimedia analysis and software company, specialising in the clarification and Demultiplexing of CCTV images and footage as well as audio material.

Dent Security Systems is the Cambridge security specialist. Founded in 1870 by locksmith Robert Dent. The company offers integrated solution of electronic and physical security to meet any circumstances in home or business premises. The service includes installation and maintenance of residential & commercial ‘burglar alarm’ systems, intruder alarm, remotely monitored intruder systems, police monitored burglar alarms, CCTV/ Video surveillance.

Derwent Systems is a industry leader in the field of Infra-Red technology - an essential element for effective night-time CCTV surveillance and ANPR.

Destination 5 is a provider of access control, CCTV, intruder detection and advanced integrated Systems. The specialists work with government and public sectors is provided to support the foundation of our national infrastructure against security threat and to assist operative safety.

Detection Security Systems offers complete range of specialist electronic fire & security systems to meet the ever changing needs of residential, commercial, retail and industrial clients. The company provides products and services such as intruder alarms, CCTV systems, access control, fire alarms, alarm monitoring, gate automation as well as service and maintenance.

Detectortesters is a designer and manufacturer of testing technology for fire detection systems. In-house expertise across a range of technical disciplines means they are able to constantly innovate and develop new technology to bring new ideas and solutions to both users of their products and anyone with a responsibility for fire safety.

deView Europe is a premier imaging and sensing company, part of the world's premier OEM/ODM CCD camera and LCD monitor provider. The group actively supports and services customer relationships through offices based in Europe, North America and Asia. The company is a leading provider of LCD panels, day night cameras, wide dynamic cameras, recorders, ancillary products and more.

Diamond Security Systems (UK) Ltd is a specialist CCTV design, installation and maintenance company.

Digi provides the industry’s broadest range of wireless products, a cloud computing platform tailored for devices, and development services to help customers get to market fast with wireless devices and applications.

Digital CCTV Ltd. is a UK based technology company with many years of experience. Digital CCTV has developed intelligent security and communication technology solutions since 1998 and is well placed to advise customers on applications and system designs.

Digital Express is an online retailer specialising in supplying customers with Consumer Electronics & Gadgets.

Specialist consulting services company with specific experience of international markets and technology projects. Established in 2004 and drawing on more than 25 years of expertise in international business development, Digital Grape provides ‘experienced based’ management advice and guidance to assist managers of both large and small organisations, to develop international market entry strategies into homeland security, transport & CCTV projects