DC Solutions is a CCTV installer based in Luton.

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 La Rue works with governments, central banks and commercial organizations 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.

- 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.

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.

Deister Electronic Ltd is one of the world's leading companies in the development, manufacture and marketing of electronic security and identification products.

Delaney Secure Ltd is an IT security distributor specializing in biometric authentication, door entry systems and PCI DSS compliance. Leading stockist of door entry solutions, time and attendance, fingerprint readers, palm vein readers, iris scanners, face recognition and OEM biometric hardware and software solutions.

Delta 5 Security specializes in providing security guard services in London and the surrounding areas. They also specialize in providing security industry-related training courses.

Delta Tec Alarms delivers high-quality alarm systems and reliable alarms to customers. The company advises customers on the products that best serve their security needs.

Dent Security Systems is the Cambridge security specialist. Founded in 1870 by locksmith Robert Dent. The company offers integrated solution of electronic and physical security to meet any circumstances in home or business premises. The service includes installation and maintenance of residential & commercial ‘burglar alarm’ systems, intruder alarm, remotely monitored intruder systems, police monitored burglar alarms, CCTV/ Video surveillance.

Design Automator is a SaaS solution for the security systems industry that automates the engineering process, eliminates human error and delivers system wide consistency, whilst saving both time and money.

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.

Detectortesters is a designer and manufacturer of testing technology for fire detection systems. In-house expertise across a range of technical disciplines means they are able to constantly innovate and develop new technology to bring new ideas and solutions to both users of their products and anyone with a responsibility for fire safety.

Detego Global is the company behind award-winning Digital Forensics, Case Management, and Endpoint Monitoring solutions that are trusted by the military, law enforcement teams, intelligence agencies, and enterprises around the world. With the ever-increasing use of digital devices and the corresponding mass of data that are created, solutions have become the preferred choice for rapidly acquiring and analyzing.

DeterTech is an award-winning risk management company that uses proprietary technology-based solutions to deliver material cost savings for clients operating nationally in the infrastructure, construction, vacant property, and other sectors, across a range of security products and services.

Device Authority is a provider of Identity and Access Management (IAM) for the Internet of Things (IoT) and Blockchain. The Company also provides solutions such as data security, network access control, credential management and much more. Device Authority manufactures innovative smart, connected devices with robust security integrated from the outset.

Device Smart Ltd. have been developing Monitoring and Control Software & Middleware Platforms for over 15 years before cloud, before IOT, before "smart anything" was a buzz word.

DGS is managed and operated by this team who take a real hands on approach to all the operational aspects of each and every contract. DGS Service Solutions provide a range of outsourced Security, Cleaning and FM Solutions to a range of customers including shopping centers, offices, factories, and retail outlets.