Cornwall Fire and Rescue Service is the statutory fire and rescue service covering Cornwall, England. As of April 2019, the service employs over 400 retained firefighters, 203 full-time firefighters, plus 170 support and administrative staff.

Corps Security is a specialist security solutions provider and is one of the most respected companies in the UK market. Their mission is to be recognised as the service leader in the market and the technical expert in providing monitoring solutions whether this is a person on-site or remote monitoring via CCTV, or a combination of the two.

Country Securities South West Ltd is an independent company, designing and installing security systems, for over 25 years, and through recommendation we have been designing/installing systems for Superyachts We never take on more projects than we can comfortable handle at any one time, which enables us to offer our customers 100% of our focus. This approach has proved invaluable. We also offer Project Management/Consultancy

Crime Prevention Services have designed, installed, maintained and monitored electronic security systems for over 30 years. The solutions are tailored to individual needs. Crime Prevention Services offer commercial security, home security, alarm receiving centre.

Crimewatch Safeguard Security Systems specialise in Intruder Detection, Fire Detection, Access Control, and Closed Circuit Television (CCTV) installation, monitoring, and design to both the public and private sector.

Crosby Intruder Alarms offer full design, installation, service, repair and maintenance to hardwired alarm systems, CCTV, access control, security lighting, fire alarms, local area paging, caravan park security, and door entry systems.

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.

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.

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.

For more than 10 years, Cube security has been in the business of installing security products such as fire alarm, intruder alarm, CCTV and access control equipments.

CY4OR is a global services firm providing extensive knowledge and expertise in digital forensics, edisclosure and information 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 & A Systems is an engineering company, providing electrical and specialist services to industry and commerce. The company offers electrical engineering services, high voltage construction and maintenance, electrical testing and inspection, quality power management, public address & voice alarm systems, CCTV & access control systems, and data network structured cabling.

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.

DA Security Systems are a family run CCTV, Fire and Alarm Business. It has been operatiing from Lee-on-the-Solent in Hampshire, UK since 1984. It has over 40yrs experience with the installation and maintenance of CCTV, Fire Alarm, Intruder Alarm, Door Entry and Nurse Call systems.

Dante provides project management services as well as commercial fire and security systems throughout the UK. The company has mechanical and construction divisions. Dante has achieved the quality standard ISO9001 and environmental standard ISO 14001. The company's specialisms include CCTV, door entry, intruder alarms, fire safety, and PA/VA.

DAS Technology can design, install and maintain security systems for a wide range of uses from homes, shops and offices to shopping centres, schools and car parks. They provide bespoke security solution that meets your needs, and all completely hassle free. Their nationwide network of engineers is trained to the highest standard in order to install security systems with a professional, efficient and reliable service.

UK based Datasat Communications delivers remote communication solutions for governments, commercial organisations, and emergency services. Datasat designs and builds networks that deploy combination of satellite, wireless and fibre communication technologies to precisely meet business requirements. Datasat provides multi-site security, remote asset protection, perimetre security & access control, and traffic management.

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.

DC Solutions is a CCTV installer based in Luton.

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.

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

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.