DC Security Products manufactures communication and video devices for digital-based LAN/WAN and Internet as well as analog-based communication products for dialup and leased line Telco Environments along with dry-copper based proprietary local area networks that are AC/DC powered for the communication and security Industries.

DC Solutions is a CCTV installer based in Luton.

Dcast Systems is a Zimbabwean security and telecommunications company based in Harare, with a strong focus on electronic security, security guarding, fire services, fibre installation, and network infrastructure. The company serves telecom operators, ISPs, government organizations, municipalities, institutions, and businesses with fibre and connectivity infrastructure.

DCIG analysts conduct informed third-party analysis of enterprise cloud, data protection, and data storage technologies. DCIG independently develops licensed content via TOP 5 Reports, Solution Profiles, and Buyers Guides. DCIG produces custom content via competitive intelligence, customer validations, executive white papers, and technology reviews. We also offer webinars and webcasts based on these published reports.

At DDS (Digital Direct Security), they are passionate about delivering high-quality security solutions that give users peace of mind. With over 20 years of experience in the industry, they have established themselves as a trusted name, supplying high-quality products for next-day delivery throughout the UK to installers and resellers.

de Jong SICHERHEIT & IT GmbH is an innovative system house for security, information and network technology and develops, among other things, intelligent solutions for hygienic access to buildings and rooms.

De La Rue works with governments, central banks and commercial organisations around the globe in producing banknotes, product authentication fighting illicit trade and counterfeiting and in the supply of key security components to the identity industry.

De Raat Security Products is one of the UK’s & Europe’s suppliers of security products. They offer a full comprehensive range of physical home, office and commercial security solutions. Their UK office is based in Corby, Northamptonshire and they hold around a 90% stock level of their full product offering here in the UK.

DEALPIX is a company that boasts technical and commercial expertise in design, integration and marketing of components and video solutions. The company is experienced in areas of imaging, such as video surveillance, optronics, security, machine vision and related markets. DEALPIX provides services for energy, security, transport, video surveillance and industrial markets.

Dean supplies professional CCTV devices "DiGiVi" from South Korea, digital video recorders "Solar" and CCTV equipment "Polyvision". During 15 years, the company has become supplier of most Russian security devices producers and world's leading brands.

Deccan security services provides multi roles security solutions to industrial, commercial, corporate, Residential & Govt. Sectors. The company made tremendous progress and value added growth in the market with the emphasis of the strong leadership professional qualities and dedicated team work of hard core Ex. Servicemen, paramilitary and well trained civilian Guards.

Deedoc Consulting offers an array of security consulting services, such as auditing and vulnerability assessment. DeeDoc’s security training programs help ICT professionals gain vital skills and expertise that can be used to immediately safeguard against security threats in their different environment.

Deep Knowledge Group is a consortium of commercial and non-profit organisations active on multiple fronts in the realm of DeepTech and Frontier Technologies (AI, Longevity, FinTech, GovTech, InvestTech), ranging from scientific research to investment, entrepreneurship, analytics, media, philanthropy and more.

- Founded in 2009, Deep Secure is privately owned UK-based security software solutions firm. Services offered include Content Threat Removal, Content Transform, Policy Enforcement, Cyber Security, Data Security, Email Content Security, Web Content Security, Portal Protection, and Deep Content Inspection.

Deepak CCTV Solutions a system integrator in Chirala, Ongole, India. They install all types of CCTV camera, IP camera, access control, and other security systems.

DeepAlert is an AI video analytics company and cloud-based system providing accurate object detection using artificial intelligence to deliver event-based, actionable alerts in real-time to enhance monitoring operations.

Deepgram is a research-driven, foundational AI company focused on building voice technology that transforms human-to-machine interactions.

DeepL is on a mission to break down language barriers for businesses everywhere. Over 100,000 businesses, governments and other organizations and millions of individuals in 63 global markets trust DeepL's Language AI platform for human-like translation and better writing. Designed with enterprise security in mind, companies around the world leverage DeepL's AI solutions that are specifically tuned for language to transform business communication.

Deere & Company (John Deere) is a world leader in providing advanced products, technology, and services for customers whose work is revolutionising agriculture and construction those who cultivate, harvest, transform, enrich and build upon the land to meet the world's increasing need for food, fuel, shelter, and infrastructure.

Defence Composites has built a long standing reputation in the Body Armour and Composites Industry. With over 25 years experience in the industry, Craig's experience of designing lightweight armour and his knowledge of composite materials gives the company the advantage of a unique level of expertise.

The Defence Industry Security Association (DISA) grew from the need to have a corporate body able to advise, guide and comment on security matters for organisations working with Her Majesty’s Government, the Ministry of Defence and their subcontractors. The membership is drawn from individuals responsible for advising management on the implications and contractual obligations required by contracts.

Defendify's all-in-one cybersecurity platform is well suited for small businesses. The company helps small and mid-size organisations navigate the cybersecurity landscape. Defendify's policies, procedures and plans defend organisations against the increasing number of cyber threats by creating employee awareness and providing institutional knowledge.

Defero Technology is an innovation-technology enterprise which has been focussing on providing customers with commercial automation and intelligent parking management systems. Defero has independently developed the AD01 series of embedded control system, multi-link communications bus control technology, and obtained 20 more patents.

Definitive Electrical supplies, installs and services many types of security system; from small residential to large commercial and warehousing systems. Ness & Hills have systems to suit any installation and budget. All alarm systems have easy-to-use touch screen keypads, battery backed up operation and back to base monitoring abilities. Other options include radio detectors, door sensors and glass break sensors.