Crown Security Systems designs, builds, installs, and maintains intruder alarms, fire alarms, CCTV, access control to current British and European Standards.

Cube Training delivers security training courses, workshops and seminars in London. It is a specialist security training provider in the following areas: CCTV installation & maintenance, burglar alarm installation & maintenance, network security and basic access control. Cube Training has installed CCTV systems in shops, supermarkets, office buildings, industrial places, homes and more.

Custom Security Services is one of the South's leading independent providers of fire, security and safety systems. The company offers a comprehensive design, installation and maintenance service for all types of security related projects. With over 25 years experience the company has successfully delivered thousands of quality installations to all types of customers, including domestic, commercial, and public sector.

Cyelcor Ltd offers solutions such as CCTV, Intruder Alarms, Security Smoke Systems, Fire Alarms, Access Control, Video Door Entry Systems, Smart Home Automation, Oil & Gas Telemetry, Systems, Automated Swimming Pool Dosing. The company also provides consultancy services for home and business owners.

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.

Since its formation in 1989, Davies Security Group has been designing bespoke security systems for its clients from all areas of the marketplace. From standalone Fire, Intruder and CCTV systems to PC-based integrated solutions, Davies Security can provide for all specifications, incorporating the latest technology from the fast moving security sector designed individually to accommodate present and future security needs.

Defender was founded in the year 2000. They manufacture fire suppression solutions. They are now established in around the world to bring the best kitchen suppression system in every kitchen. Their product is Certified LPCB.

Delta System Technology designs systems giving the possibility to the customer to interact in real time with the central alarm and video surveillance.

Detec AS was established in 1981 in Oslo, Norway. The company develops & promotes products for video surveillance. The company delivers both software and hardware, and continuously develops digital video-detection products to suit the needs of the future. With help of partners and dealers, Detec delivers comprehensive surveillance packages, covering assessment of customers' needs, installation, testing for detection, after sales support & more.

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.

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 Trade Supplies supplies consumer units, CCTV, heating, timers, low energy LEDs, lighting, access control systems, fire protection systems & lots more from top manufacturers.

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.

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.

DS Securities is one of the leading independent security and fire specialists in the UK. The company aims to provide a range of innovative, reliable and dependable security, fire, CCTV, access control, network and IP technology solutions, specifically designed, installed and maintained to highest standards for customer’s individual needs. DS Securities' clients include individual home owners, small businesses and large corporations.

DSG Distributors is a distributor of IP and analogue surveillance, remote monitoring and automation systems. The company also offers A/V gear, CCTV racks, connectors, video servers and video walls for residential and commercial security.

Germany's DTE-Sicherheitstechnik GmbH provides intrusion detection systems, fire alarm systems, video surveillance, access control, time recording, telecommunications and safe equipment for safety and the protection of clients . Whether at home or in business. since the communication possibilities are getting bigger the company also offers alarm transmission via TCP / IP to video transmission on mobile devices such as smartphones or tablet PC.

Cornwall CCTV, fire and security specialists, Duchy Alarms, offers a professional installation and maintenance service for a wide range of fire and security alarms and systems throughout the South West of England. Duchy Alarms has been serving the domestic and commercial industry throughout Devon and Cornwall. Previous clients include the RNLI, National Probation Service, and various Schools, Colleges, and NHS hospitals.

DWW Alarm and Safety Systems GmbH was founded in 1984 in Düren. The company offers companies and individual customers advice/planning, construction, and maintenance services in the field of safety engineering. DWW's range of services consists of Intrusion detection systems (VdS), Fire alarm systems (VdS), Video surveillance systems, Access control systems (VdS), Time Management, Information and communication transmission techniques.

Dyfed Alarms Ltd is one of the largest independent suppliers and installers of intruder alarms, CCTV, fire detection systems and access control equipment in Wales. The company offers a wide range of security equipment and provides industry leading installation and maintenance services for both residential and commercial customers. Dyfed also offers 24-hour alarm monitoring and response, scheduled and emergency maintenance.

e-fireandsecurity.co.uk provides fire and security products to the retail and trade including a large range of wireless and wired intruder and burglar alarms, like infinite prime, powermax, powermax+, powermax pro, wisdom and i-on. The company also stocks fire rated lighting, smoke detectors, CCTV and all associated equipment, door entry systems, audio and video entry systems, access control, fire protection, security lighting.

Southport's EFT Systems Ltd is one of the leading fire and security company. The company provides electrical/electronic security and fire safety systems, accredited to NSI ISO 9001, NICEIC AND JIB. EFT designs, installs, services, and maintains a range of systems, tailored to both domestic and commercial client requirements. The company offers security systems, access control, CCTV, fire protection, alarm monitoring, and specialist call systems.

E2S is the world's leading independent signalling manufacturer. The company specializes in the design, development and manufacture of high electronic sounders, PA loudspeakers, intelligent voice annunciators, flash alarms, status lamps and manual call points.