CY4OR is a global services firm providing extensive knowledge and expertise in digital forensics, edisclosure and information security.

Cyberhomes is a UK-based provider of smart home installations including CCTV and security applications.

Cyelcor Ltd offers solutions such as CCTV, Intruder Alarms, Security Smoke Systems, Fire Alarms, Access Control, Video Door Entry Systems, Smart Home Automation, Oil & Gas Telemetry, Systems, Automated Swimming Pool Dosing. The company also provides consultancy services for home and business owners.

Cygnus SD specialises in providing quality CCTV – IP and analogue – , access control products and accessories to the UK security trade.

Cynon Valley Crime Reduction Services Limited is a non-for-profit social enterprise which is now in its 10th year of trading. It was set up to support the Charity side (Cynon Valley Crime Prevention Association) with sustainable funding, by providing security services across the country, these include fitting of security products like intruder alarm systems, CCTV, access control systems, UPVC locking systems, and key suiting/cutting services.

D & A Systems is an engineering company, providing electrical and specialist services to industry and commerce. The company offers electrical engineering services, high voltage construction and maintenance, electrical testing and inspection, quality power management, public address & voice alarm systems, CCTV & access control systems, and data network structured cabling.

D&D Security Derby offers fully licensed SIA-approved security guards that are ready to be deployed within hours upon acceptence. It provides approved contractor security services for major companies across the UK. Specialists in static guarding, it offers a cost-effective security service for the protection of UK businesses.

DA Security Systems are a family run CCTV, Fire and Alarm Business. It has been operatiing from Lee-on-the-Solent in Hampshire, UK since 1984. It has over 40yrs experience with the installation and maintenance of CCTV, Fire Alarm, Intruder Alarm, Door Entry and Nurse Call systems.

Dallmeier electronic UK is provider of professional video security technology and network-based IP video surveillance systems. It has been developing and manufacturing high-quality complete solutions for the CCTV/IP area.

Dalycom is a complete business communications and IT service provider based in Leicestershire, UK. The company’s services include cloud based IT and telephony services, broadband, calls, lines & mobile, CCTV, wireless networks and support.

Dangerfield specialise in global recruitment, M&A and management consultancy services. Dangerfield International has a wealth of experience in the security and defence sectors.

Dante provides project management services as well as commercial fire and security systems throughout the UK. The company has mechanical and construction divisions. Dante has achieved the quality standard ISO9001 and environmental standard ISO 14001. The company's specialisms include CCTV, door entry, intruder alarms, fire safety, and PA/VA.

Dantech Electronic Engineering is a UK manufacturer who has the capability to design, develop and produce products for the global security industry. For more than 40 years, the company has designed, developed and manufactured electronic equipment. This includes a large variety of electronic security products, including unique range of power supplies and ancillary equipment specifically engineered to service the global security industry.

DAS Technology can design, install and maintain security systems for a wide range of uses from homes, shops and offices to shopping centres, schools and car parks. They provide bespoke security solution that meets your needs, and all completely hassle free. Their nationwide network of engineers is trained to the highest standard in order to install security systems with a professional, efficient and reliable service.

DAS Technology are technology specialists with over a decades experience delivering solutions for both commercial and domestic customers. Their security division is full of specialists in CCTV, access control, door entry and fire.

Data Vision has been the largest distributor of vision components in the Benelux, with offices in the Netherlands and Belgium. Data Vision distinguishes itself by the large network it has built up over the years. This allows the company to tailor its work to the customer’s specifications and select the best partner for your project.

Datapath Limited is an innovator in the field of computer graphics and video wall display technology; covering multiple industries such as visual media, military, education, security and healthcare. Continuously developing the technology within their product ranges, they are able to provide outstanding solutions.

UK based Datasat Communications delivers remote communication solutions for governments, commercial organisations, and emergency services. Datasat designs and builds networks that deploy combination of satellite, wireless and fibre communication technologies to precisely meet business requirements. Datasat provides multi-site security, remote asset protection, perimetre security & access control, and traffic management.

DATASEC develops, produces and delivers products for Access Control, PC Access, Time & Attendance, Video Surveillance and Security Patrol Systems. DATASEC also offers special system solutions from other manufacturers, which is included in its system range. DATASEC is focused on integrated system concepts and the interaction between all important detailed solutions for securing sites, buildings, vehicle access or individual doors.

davidiT GmbH, the IT subsidiary of the international leader in digital video surveillance systems, the Dallmeier Group of Companies, is a Value Added Video Distributor and special services provider for video and IT. Its primary business is the marketing of IP video surveillance and video monitoring solutions.

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.

DEKOM Video Security & Network GmbH is a Hamburg-based distributor that specialises in network-based video surveillance technology. DEKOM offers consulting, sales, design, implementation, training for clients such as banks, museums, industry, prisons, etc. The product portfolio includes IP network cameras, Panomera Multifocal sensor systems, thermal imaging & analogue cameras, monitors, software & management systems, IP video servers etc.

Delta System Technology designs systems giving the possibility to the customer to interact in real time with the central alarm and video surveillance.