Croma Security Solutions Group PLC (CSS Group PLC) is an AIM-quoted total security services provider. The company specialises in guarding, electronic security, CCTV, intruder alarms, video analytics, access control, Biometrics, keyholding, close protection, fire alarms, revenue parking, private investigation, locksmithing, and physical security. CSS' Fastvein Time & Attendance is a biometric attendance and people clocking solution.

Cryptocard is an industry innovator in authentication-as-a-service, bringing organisations the cost reduction, simplicity, and flexibility that can only come from SaaS. New business efficiencies, infrastructure scale, and cost savings are being driven by virtualisation and cloud services adoption, but this changing paradigm has challenged organisations to make the move to the cloud securely and smoothly, without disruption to their business.

Cryptomathic is a provider of security software solutions to businesses across a wide range of industry sectors, including banking, government, technology manufacturing, cloud and mobile. With 30 years' experience, they provide systems for eBanking, PKI, ID & ePassport, card issuing, advanced key management and managed cryptography, through best-of-breed security solutions and services.

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.

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.

Darfen is a manufacturer of perimeter fencing products as well as access control solutions.

Databac installs new HP Indigo 5000 series digital printing line to enable personalization of cards on demand. They manufacture and supply cards in a variety of sizes and materials depending on the needs. These can incorporate a variety of reading technologies such as: Magnetic stripe (HiCo/LoCo/Watermark Magnetics®) Contact chip – such as SLE5542, SmartCafe,ID Prime; GemClub Memo RFID – all types Barcode (2D,QR and Infrared)

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.

Eastlished in 1993, DEA System has grown up with ambition, always looking to the future and to develop further. For this DEA System has created DEA Electron, a Business Unit that develops and manufactures high quality electronic with high standards of control and certified results.

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.

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.

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.

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.

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.

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.

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.

DORMA is a globally active supplier of door technology products and systems. The company is the world market leader in door controls, movable walls and automatic door systems. The DORMA Group is subdivided structurally into five divisions: Door Control, Automatic, Glass, Security / Time and Access and Movable Walls. DORMA maintains major production plants in several European countries plus Singapore, Malaysia, China and North and South America.

Dorma and Kaba are now Dormakaba. They offer products, solutions and services for secure access to buildings and rooms – now all from a single source. They have over 150 years of experience, and stand for security, sustainability and reliability.

Dorset Architectural Ironmongers is one of the leading supplier of architectural ironmongery, fire protection products and associated services to clients in both the public and private sector. Based in Dorset, the company product range including access control, hinges, door closers, locking systems, and fire escape hardware etc. DAI work with all the leading manufacturers to provide an extensive range of top quality products for all projects.

Dot Origin Ltd. is a leading European provider of products and solutions in the field of smart card technology. Dot Origin distributes smart card, RFID and NFC solutions from vendors including ACS, Gemalto, HID, Identive and NXP. Headquartered in the UK with US subsidiary, the company has been operating successfully in this market for over 10 years, and has a wealth of knowledge and experience which is used offer comprehensive technical support.

DSG Systems is a subsidiary company of Bertel O Steen, who is one of the respected companies in Norway. DSG is a specialist provider & systems integrator. The company provides security systems "real-time" network video surveillance, security installations at airports, bomb protection, & security of mobile and fixed plants on land, sea and air. DSG also delivers detection solutions as well as self-service bag drop systems for airports worldwide.

DSSL Group is a specialsits in Closed Circuit Television, Access Control and Integrated Systems. The company expertise in development, installation, maintenance and integration of CCTV, access control (wireless, fibre and hard wired) and perimeter protection systems gained with various organisations.

DSX-Europe is a UK company based in Manchester. The company specialises in distribution of the DSX Access Systems. DSX-Europe offers hardware, software as well as biometrics solutions of DSX Access Systems. With over 75 years of experience in electronic security industry, DSX-Europe's staff are well equipped to help customers with any Access Control requirements.

With over 25 years of experience and about 13.000 High Performance Doors installed every year, DYNACO is one of the worldwide leaders in Industrial roll-up doors. The DYNACO achievement is the result of patented designs and features to achieve safety, performance, sealing and low maintenance costs and to answer specific requirements.