Quantum was established in 1993 and handles all aspects of fire alarm, CCTV and security system installations from design through to commissioning, and offer a comprehensive upgrade and maintenance service. Quantum also offers a consultation and design service for audiovisual projects such as presentation and training rooms, distributed TV and video conferencing.

Quest Fire & Security Provides homes and business with tailor made security systems that include burglar alarms, CCTV systems, wireless burglar alarms, fire alarm systems, in addition to alarm maintenance, intruder alarms, fire extinguishers and alarm monitoring.

R.J. Coleman provides installation of intruder alarm and security lighting, and maintenance of burglar alarm. The company operate out of their head office in Scunthorpe on major construction programmes across the UK. R.J. Coleman client base in varies including commercial factories, shops, agricultural, public houses, nightclubs, local government and domestic clients.

Established in 1998, Racam Security & Communications Ltd. specialises in the design, supply, installation, commissioning and maintenance of many types of security and communications systems. Racam Security & Communications' systems range from domestic intruder alarm systems to large public space CCTV systems and include police, local authorities, casinos and defence contracts.

Raidocontact Ltd is a manufacturer and installer of specialist security and communication systems. Radiocontact's client base includes airports, banks, government establishments, hospitals and railways. The company manufactures closed circuit television, house security systems and specialised fabrication of panels as well as controls.

Formed in 2004, Radius Security Systems Ltd is a North West security expert and provider of door supervision and event security. Radius Security Systems Ltd covers a wide range of areas throughout the North West and Yorkshire. Radius Security Ltd holds SIA approved contractor status for the provision of Door Supervision. Radius Security Systems operates mainly in the commercial, industrial and public sectors of London and the South East.

Rainbow provides a range of IP and analogue security solutions.

Incorporated in 1977, Rainbow Security Systems is part of Rainbow Electrical & Security Systems Ltd. Based in Northampton, England, Rainbow Security Systems specialises in the installation and maintenance of intruder alarms systems to domestic dwellings. Its clientele includes the premier national house builders David Wilson Homes, Westbury Homes, Persimmon Homes, Charles Church Homes and King of Oak Homes.

Rampart Security Ltd are installers of Security Systems to British Standard 4737 ISO 9000 and NACOSS. Rampart Security is an established business with over 12 years experience in the security industry. With extensive expertise and knowledge, the company designs, installs, and maintains, a comprehensive range of security systems to suit customer needs.

Rapide Security & Surveillance Ltd. is the Midlands leading installer of commercial security systems, house alarms, automatic and manual fire alarms, closed circuit television systems, door access control, as well as fully integrated solutions including personnel attack and hold up alarms. Rapide Security & Surveillance is a NSI “Gold” approved installer of security systems and is also certified to the international quality standard ISO 9001.

Since 1985, Raysil Security Systems Limited has been designing and installing integrated security systems to the highest industry standards, collecting certifications - NSI, LPS 1014, ISO 9001-2000 and approvals - police authorities, home office, major insurers - along the way.

Realtime Security UK Ltd. is a security and investigations company located in Stevenage, Hertfordshire, United Kingdom. Established in 2007, Realtime decided to put its knowledge and industry know-how into sourcing and selling easy to install CCTV equipment for the home and business.

Established in 1993, Red Alert provides solution to the ever increasing threat to security in the home, offices, farms and other industries. The company offers various security products, such as intruder alarms, fire extinguishers, gate automation, fire alarms, safes for home security.

Red Maple Technologies was founded with one goal in mind: to help organisations demystify all aspects of cybersecurity.

Security and electrical installers, over 40 yrs experience in the industry, competitive rates, landlord inspections, upgrades and remedial works undertaken, fire alarm service and repair.

Reliance High-Tech Ltd. specialises in the provision of fully integrated electronic security solutions, closed circuit television surveillance (CCTV) and access control systems. Reliance High-Tech offers a comprehensive range of services, based on cutting-edge technology, for the commercial, industrial and public sectors.

Based in Middlesbrough, Render Alarms Ltd have been installing and maintaining security, fire and CCTV systems for over 30 years, covering the North East of England. The company provides services for commercial, industrial, public sector and residential customers.

RFS Fire and Security design, install, and service high quality electronic Fire and Intruder Security Alarm Systems to Domestic and Commercial Clients. They also specialise in Access Control and CCTV equipment.

Richards was formed some 30 years ago, during which time they have steadily grown to become one of the leading independent specialist companies regarding CCTV . Richards CCTV design, supply, install and commission systems to exact customer requirements. They also provide mobile on-site engineers available on call-out 24hrs a day.