Through their 24/7 Security Operations Centre, DigitalXRAID delivers cyber security strategies to organisations that enhance the security posture and reduce the risk, cost, and reputational damage of a breach.

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.

Dimension Productions Limited is a UK manufacturer of the handySet portable colour, battery powered test monitor, including the new HandySet technical portable test monitor. DPL is a design consultant for closed circuit television CCTV systems, project managers, technical writers for CCTV installations and programmers of bespoke software for the CCTV industry.

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.

Docklands Digital supplies and installs digital CCTV systems, access control systems, video over networks(LAN), broadband internet, general security solutions as well as general repairs and maintenance. Docklands Digital also offers TeleEye series of video and audio remote monitoring systems through the access of ADSL, cable modem, mobile network, PSTN, ISDN, leased line, LAN or the Internet.

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.

Doris CCTV is one of the fastest-growing companies in the Security industry. They do offer a whole range of IP cameras, Analogue Cameras, DVRs, and NVRs.

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.

DPE Systems is a UK-based CCTV and electronic security systems company based in Bolton, Lancashire. The company provides security solutions for both domestic and commercial customers, with services covering the design, supply, installation, and servicing of electronic security systems.

Dragon Fire & Security Systems is one of South Wales' largest independent fire and intruder alarm installers. The company offers intruder alarm, fire alarm, CCTV, remote monitoring (off-site), automatic gates and barriers, access control and door entry, emergency lighting systems' services. Dragon Fire & Security Systems is approved to all industry's highest recognised standards including NSI (NACOSS GOLD) and BAFEFire Alarm Certification Scheme.

UK's Dragon Security Systems designs, installs and maintains security systems including CCTV surveillance, fire detection, intruder detection, and access control for commercial and domestic use. The company is NSI Gold approved and quality insured to provide the highest standard possible. Dragon Security Systems also schedules regular preventive maintenance checks to both its own installations and those systems installed by other companies.

Drone Major is a globally renowned drone and counter drone advisory service enabling clients to navigate the expanding applications of drone technology. Drone Major serves to advise on what is possible, where to acquire it, and how to integrate it safely and effectively.

DroneOps specialises in the commercial application of Small Unmanned Aerial Systems (SUAS) and robotics. They research and develop new capabilities for drones to work in the commercial, security and defence arenas.