DRS Technologies is a leading supplier of integrated products, services and support to military forces, intelligence agencies and prime contractors worldwide. DRS holds leading market positions in thermal imaging devices, combat display workstations, electronic sensor systems, power systems, rugged computer systems, air combat training systems, mission recorders, deployable flight incident recorders, and environmental control systems etc.

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.

DS Security is a pioneer UK Security company providing Security Services throughout the United Kingdom. Their security camera systems, access control and asset protection solutions provide a real deterrent and the peace of mind having a full record of any event or problem if needed.

Operating throughout the UK and Europe, DSB provides security for a full range of requirements, including door personnel, retail security and close protection security operatives. They also supply security equipments.

dsc security is the trading name of DSC Alarms Ltd. The company is supplier and installer of security equipments to both Residential and Commercial customers. Based in Crowthorne Berkshire, dsc security is one of the premier privately owned security companies in the Thames Valley specialising in intruder alarms, locks, safes, CCTV & access control.

DSSL Group is a specialsits in Closed Circuit Television, Access Control and Integrated Systems. The company expertise in development, installation, maintenance and integration of CCTV, access control (wireless, fibre and hard wired) and perimeter protection systems gained with various organisations.

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.

Dunedin Facilities Management Ltd is an SIA Approved contractor, who's management and staff are veterans of law enforcement and the security industry. The company is a premier provider of security services like security guards, CCTV security, mobile patrol, door supervisors, key holding and event security solutions.

DVS Limited is one of the Europe’s most successful multi-brand distributors of electronic surveillance products. The company is an authorised UK Distributor of Hikvision, Arecont Vision, FLIR Thermal Imaging Infrared Cameras, iiyama monitors, Luminite electronics, NUUO video management, Prism Skylabs, Tamron lenses and Videotec. DVS supplies CCTV cameras, IP video solutions & digital recording surveillance systems, CCTV software, etc.

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. The products include, door sets, counters, glazed screens of varying type, windows of varying type, transaction facilities and a comprehensive range of ancillary products.

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.

Dynamic CCTV Ltd. was founded in 1994 with the aim of reducing the high prices charged for CCTV equipment. They supply CCTV products and technical support.

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.

EA Group (UK) Limited provides installation and support service within access control, parking and security market sectors. In 1995 Perimeter Security (EA) Limited was incorporated as part of Electro Automation Group of Companies to increase its product portfolio. EA Parking was established as a sister company to Perimeter Security, to supply, install and support a range of “Pay on Foot” Car Park equipment.

Eagle Security Solutions is a security systems specialist offering burglar alarms, CCTV, and door entry systems installation and maintenance for homes and businesses. In addition, they provide a range of professional home alarm systems, such as Visonic Powermaster, Risco Agility, and Premier Elite.

Eagle Security Systems provides a comprehensive range of domestic and commercial security solutions from burglar alarms and monitoring to CCTV and remote viewing. The company offers colour CCTV cameras for home or business with 24-hour recording and night vision for after dark. Eagle Security Systems provides wire free approved alarms. All work by Eagle Security Systems is Insurance and Police Approved, certified and Nacoss/NSI Gold Approved.

East Sussex Security, established in Hailsham, is an acknowledged security expert throughout Kent, Surrey, Hampshire, and Sussex. The company's specialists advise, supply, and install a comprehensive range of security solutions for both domestic and commercial premises, including intruder alarm, fire alarm, CCTV, and access control systems. East Sussex Security ensures that the system is serviced and maintained to the current BS EN standards.