Critec Consult is a security consultancy firm offering expert advice, design and technical services for end users, architects and installers. Critec's personnel have experience in designing and implementing integrated systems involving intruder detection, analogue and digital CCTV, access control, physical security, building management for high profile projects in the UK, Europe and the Middle East uch as military bases, VIP residencies, etc.

Cross-guard Ltd. is the sole UK manufacturer of cold/hot aisle containment solutions, Connexions server caging and partitioning, Ventis server safes and cabinets, bespoke security solutions, including secure cash transfer units and security walling, security grilles, and anti-burglar bars.

Crowdguard provides temporary event security solutions by installing security barrier systems. They also offer installation services for the Surface Guard system which is designed to provide hostile vehicle mitigation and temporary event security for stadiums, festivals, urban squares and VIP visits.

Crown Hosting Data Centres Limited is a unique joint venture between the Cabinet Office and Ark Data Centres dedicated to serving the Public Sector. Together they are the trusted partner of the UK Government delivering increased efficiency, improved value, and transparency of Data Centre Services.

Crown Security Services based in Brimingham offers a range of services, such as manned guarding, CCTV remote monitoring, keyholding & alarm response, mobile security patrols & construction site security. Crown Security Services provide an off-site CCTV monitoring and protection service for commercial, industrial and residential premises through the use of remote digital technology, cameras and motion activated CCTV systems.

CSM specialise in support service facilities management solutions for the Construction & Commercial Property sectors. They offer services such as physical security, CCTV security, mobile security, cleaning services and many more.

Cyberprism is a UK based company, providing integrated cyber security solutions in the energy, maritime and private wealth protection sectors. They specialise in Cyber Security, Operational Technology Networks, Cyber Security Training, Ship Security, Super Yacht, Critical National Infrastructure, Ports, and HNW Cyber Protection services.

Cybersecurity and Infrastructure Security Agency leads the national effort to protect and enhance the resilience of the nation's physical and cyber infrastructure. CISA's multi-faceted mission is home to more than 15 career fields, including business administration, cybersecurity, programme management, communications, data science.

CYFOR Secure is the dedicated cyber security division of CYFOR, specialising in a breadth of proactive and reactive IT security services, with expertise in Digital Forensics and Incident Response (DFIR). We are a trusted provider to SMEs and large enterprises globally, spanning numerous sectors that include manufacturing, legal, engineering, healthcare, finance, and telecommunications.

Cymulate is a SaaS-based breach and attack simulation platform solutions company that makes it simple to know and optimise security posture any time, all the time and empowers companies to safeguard their business-critical assets. Services provided include cyber posture, cyber attack simulation, security posture assessment, breach and attack simulation, validate controls, security validation, security risk assessment and cyber security.

CyNam is a Community Interest Company based in Cheltenham, the cradle of UK cyber innovation. The goal of CyNam is to bring together the best technology minds from local SME’s and Startups to fully harness the rich cyber security ecosystem that flourishes around Cheltenham, the home of the National Technical Authority for Information Security, GCHQ.

D-Fence Electronic Fencing and Security Systems Ltd. is an Israeli "Security-by-Technology" company that designs, develops and manufactures the most advanced Perimeter Intrusion Detection Systems (PIDS), based on an exclusive Strain Gauge Sensor technology. This proprietary technology allows us to offer highly aesthetic PIDS based on the “Open-Design” concept, and most importantly, that work with Zero False Alarms.

D.O.G-Sec,is a leading company in the field of Homeland security,Perimeter protection and "Smart Fencing". Providing up to date Perimeter security Solutions: surveillance cameras,video analytics, multi sensor capabilities and smart Fencing ( Intrusion Detection Sensors). All of the solutions above are integrating with our cutting edge state of the art VMS & Command and Control Software. Our systems' transmition method is WiFi,GSM or Fiber Optic.

D.W. Price Security was established in 1998 by the current directors who each have more than 30 years experience within the physical security sector. They are the 3rd generation of the original family business, with roots based in the original glass and glazing industry with the first security installations carried out in the early 1970s.

D&D Security Derby offers fully licensed SIA-approved security guards that are ready to be deployed within hours upon acceptence. It provides approved contractor security services for major companies across the UK. Specialists in static guarding, it offers a cost-effective security service for the protection of UK businesses.

D6 Research is a research and advisory firm focused on the intersect of physical and cyber security. They produce strategic research reports, vendor market scopes, methodology, best practice, project tools, and education that empower clients.

Dardan Security’s smart security solutions go beyond safeguarding buildings, property and staff. It combines the best in technology, mobile services and physical guarding to protect the most valuable asset of all: reputation. Dardan Security has enjoyed strong organic growth by partnering with only quality clients who wish to join it on its journey.

Darkbit is a renowned cloud infrastructure and security solutions firm, based out of Reston, Virginia. They deliver cloud-native security solutions and products for enterprises.

Darvis drives the world’s transition towards automation, innovation and computer vision for a more simple and efficient tomorrow. The company was founded in the heart of Silicon Valley, California, USA. They were originally established as a virtual reality company called Hashplay offering virtual reality and live streaming services.

Dassault Aviation is a French aerospace, defence equipment and security systems company that shapes the future by designing and building military aircraft, business jets and space systems. They expertise as a manufacturer of both military aircraft and business jets. Creator of more than 100 prototypes in the last century, with over 10,000 aircraft delivered to 90 countries.

Data From Sky are redefining the meaning of SMART by converting any video stream into the FLOW of actionable insights. Their visual traffic framework makes users a designer of the sensor they need. Born for integration, powered by AI, and running everywhere. Follow the FLOW – their masterpiece in traffic intelligence.

Data Performance Consultancy Ltd. are Smart City specialists advising both local and central government on the development of smart cities for social impact. They are building a technology stack that looks to connect social innovation and develop the SME supply chains and in doing so create inclusive economic growth.

Datastor integrate the best in proprietary equipment and software products to provide not only the optimum solutions to their clients individual needs but also one which communicates seamlessly with other key applications.

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.