DESICO offers engineering solutions in automation and control projects related to the security market. DESICO manufactures the Integration system "VIGIPLUS", a suite of applications consisting of personalised SCADA for managing and integrating security systems, such as Intrusion, Fire, CCTV, Access , Visits, Accreditations, Patrols and also Automation and Control systems.

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.

Incepted in the year 2017, DevRAy are manufacturing a world-class range of CCTV Cameras. They are also proficient in bringing out a wide range of Wireless Ip Cameras, Dome Camera and, Bullet Camera & Switches etc.

DFB Security is a leading Security Consultancy provider of security, investigation, training, operational and expert witness services. It provides bespoke security and investigation solutions to public sector, retailers, solicitors, private Businesses as well as charities and voluntary organisations across Ireland.

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

Digital Barriers was established in 2009 to provide advanced surveillance technologies to the international homeland security and defence markets. The company brings innovative new thinking and solutions to the protection of most critical national assets, locations and infrastructure.

Digital ID specialises in all things ID and have stock from some of the biggest names in the industry. Digital ID is one of the leading providers of ID card printers from an array of respected manufacturers, including Magicard, Datacard, Evolis, Zebra and more. The company offers access control and smart cards, ID card and visitor systems, printable and printed ID cards, software, as well as accessories.

Diligence BSB Forensic is one of the UK's leading independent Forensic service providers to the Police, Legal Profession, Corporate and Fraud Investigators. BSB assesses clients' CCTV systems or assists in purchasing decision or tender review, reporting in terms of systems ability to provide forensic material to be used in evidence. BSB Forensic offers a range of training courses covering forensic audio, video, document or fingerprint evidence.

DIRAK provides industrial enclosure hardware, developing, manufacturing, and distributing components for rack and enclosure construction. They specialise in latching, hinging and gasketing products which can function either mechanically or electronically.

Direct CCTV and Security Systems Ltd specialises in design, installation and maintenance of best bespoke security systems for commercial and domestic market. Direct CCTV offers CCTV, access control, intruder detection, door entry, biometrics, integrated security, maintenance, and additional services. Robust security solutions are delivered for all types of business, to inspire confidence in protection of business premises and staff.

Direct Security provides Integrated systems, CCTV, access control, door entry, intruder alarm, fire systems, personal attack systems, photo-id, vehicle recognition ANPR, structured cabling, networked systems, asset management, project management, data management, software development, consultancy, and system auditing services. Direct Security is an ISO 9002 quality assured company and NACOSS Gold and Construction Line accredited.

Established in 1982 Direct Security Systems has earned an excellent reputation for providing security products and services in Wolverhampton, Walsall and surrounding areas in West Midlands. The company provides high performance intruder alarms, area detectors for residential, commercial & industrial needs, control panels that react to change, access control systems, card readers & keypads, CCTV & 24 hour monitoring services, fire alarm systems.

Direct Technology UK Ltd is a highly successful national electrical contractor operating across the UK, that cover retail chains, sports venues & stadiums, airports, shopping centres & business centres. The company manage medium & large electrical projects as well as bespoke projects such as security systems, CCTV, access & control, audio visual provisions, networks, fibre optics and much more.

Direct Trade Supplies supplies consumer units, CCTV, heating, timers, low energy LEDs, lighting, access control systems, fire protection systems & lots more from top manufacturers.

DOM-UK Ltd. focuses on developing and offering high quality mechanical and access control solutions for residential and commercial applications. They provide smart access control, mechanical and digital locking solutions, including locks, lockcases, digital handles and cylinders, wall readers and terminals, trapped key interlocking systems and anti-tilt systems.

Domalarms is a family owned and run company. The company has its head office in Leeds on the outskirts of the city centre. Domalarms deals in all aspects of home, business and commercial security designing, supplying, and installation including burglar alarms, intruder prevention systems, CCTV systems, access control systems, automatic lighting, electrical services, fire alarms, and automated gates and barriers.

Established in 1997, Door Controls Direct is a UK specialist online supplier of electromagnetic door closers and door control equipment with access to thousands of door hardware products. It also supplies digital locks, access control, electric locking, power supplies, and automatic door operators, as well as door hardware and fire escape hardware for buildings to comply with fire safety and security regulations.

Door Entry Direct Ltd specialises in the distribution of door entry systems of proven quality. The team at Door Entry Direct Ltd have over 25 years experience in door entry phone intercom systems.

Door-Stop offers composite door solutions in a completely different way. They are easy to buy, quick to get hold of, and are easy to sell. Today 90% of Door-Stop’s orders are placed using the 1 minute, 5 step online ordering system. They deliver doors nationwide in just 3 days. Their doors come with an ERA cylinder-free lock which is secure. With a traditional mortice key, the door doesn’t need a locking cylinder because the key engages directly.

Doorware is Ireland’s leading provider of solutions for door systems ranging from large scale commercial projects to smaller domestic installations. Doorware provides its clients with quality products from worldwide leading brands such as Salto, Eclisse and Marcal. The company offers smart chip systems, wire-free networked access control, locking solutions, and other access control services. Doorware also provides clients with technical advice.

DORLET was set up in 1989. From the start, the company focused on producing its own product, developing all of the necessary technology, including hardware and software. Based on access control, the company's systems have evolved over the years to form a comprehensive management platform, DASS. This platform also includes visitor control, presence control, ID cards , integration of other subsystems, among other systems.