Northern Alarm Protection Co. Ltd. specialises in creating security solutions for the commercial and industrial sector. The company offers CCTV security systems, access control systems and alarm monitoring services. Northern Alarm Protection is a pioneer in installation and monitoring of security protection systems.

Northern Security Alarms has been installing and maintaining security systems including CCTV systems, access control, fire alarms, and nurse call systems etc. The company have been protecting homes and businesses throughout the Highlands & Islands and Grampian regions of Scotland. Northern Security Alarms have established ourselves as one of the major players in the fire and security industry.

Northumberland Media Centre provides tailor-made security solutions for customers in each sector and specialises in the design, installation and support of security systems. NMC installs CCTV and burglar alarm systems in homes and businesses.

Nova Alarm Ltd specialises in installation and maintenance of security systems such as CCTV, fire detection systems, access control, remote signalling, and Burglar alarms etc. The company mainly provides installation services to the local government and domestic clients. As an NSI (NACOSS) Gold Approved Company, Nova Alarm Ltd adhere to the latest European Standards.

NSI Distribution is an industry wholesale distribution company with a strong background in engineering design and manufacturing of low voltage electronic components. NSI Distribution offers a comprehensive line of Voice & Data, Security, CCTV, Access Control, and Automation products as well as the essential installation and peripheral products, creating a “one-stop-shopping” environment for its dealer network.

NSP Security is a leading multinational provider of access Control and security systems. The NSP brand is synonymous for providing outstanding service, and is trusted to provide intelligent locking and security solutions to the student accommodation, hotel, hostel and commercial sectors.

NUTEC SECURITY SYSTEMS LTD has been manufacturing and installing CCTV, access control systems, detection systems, and home alarms etc. The company has been providing its security systems to Schools, Health and Local Authorities and corporate companies both large and small. NUTEC SECURITY SYSTEMS LTD installs and maintains to current European Standard PD6662.

NuTech is the most established and largest force dedicated to retail loss prevention, working with the top Fortune 500 retail companies. Nutech has also had a long standing relationship with the U.S. government, protecting many of it's agencies and defense-related operations, including the largest defense contractor Lockheed Martin who calls upon NuTech everyday to protect it's facilities throughout the U.S.

NW Cabling LLC is a low voltage electrical contractor specialising in system design and engineering. they also implement multi-site deployments and campus environments. Founded in 2010 and headquartered in Spokane WA, NW Cabling has completed projects throughout the Pacific Northwest.

O' Rourke Security Systems supply and install the latest advanced systems including intruder alarms, smoke alarms, CCTV, access control systems, gate automation etc. Based in Leitrim, the company offers high quality installations at competitive rates. O' Rourke Security System offers services to both domestic as well as commercial sectors.

Oakpark Alarms specialises in installation and maintenance of of access control, CCTV, fire alarms etc. The company offers services both commercial and domestic locations. Oakpark Alarms cover all areas of Dorset, Hampshire, Berkshire, West Sussex and Wiltshire as well as providing commercial systems over a wider area still. The company ability to certify installations resultant from their membership of the SSAIB and BAFE approval.

Oakpark Alarms Security Services Ltd specialise in the Design, Supply, Installation,Service and Maintenance of Intruder Alarms, CCTV, Door Access, Fire Alarms, Emergency Lighting, Fire Extinguishers, Fire Suppression Systems and Automated Gates, Barriers and Bollards, Perimeter Security and Fencing. Based in Winslow, the company work varies from garden sheds to Hotels.

Obsidian Security is a leading supplier and installer of electronic security systems and fire alarm systems to commercial and industrial premises and public buildings such as schools and hospitals.

OCS Security Services specilaises in manufacturing and installing CCTV, alarms systems, access control systems. The company also provide a fully integrated electronic systems and manned guarding solution under a single management structure. Based in Crawley, OCS Security Services provide a full security solution to offer security surveillance and protection of personnel and property.

Octagon Ltd offers installation and maintenance services of security systems such as CCTV, alarms systems, door entry, access control, perimeter security, and security lights etc. Based in Greater London, the company's team is highly skilled and is equipped to provide an efficient and quick service. Octagon Ltd brand is instantly identifiable and trusted.

OneTel Security is an innovative telecommunications company providing telecom services for commercial, government and education organisations. They provide comprehensive data and voice solutions. They are the de facto standard for telecommunication network solution providers in the alarm industry. They have built and implemented fully-redundant solutions for central monitoring stations across the country.

OnFocus AI specialises in the end-to-end implementation of Artificial Intelligence (AI) across IT infrastructure. From conceptual design to full-scale development and ongoing maintenance, they empower organisations to seamlessly integrate AI technologies into their IT ecosystems. OnFocus Artificial Intelligence specialises in offering end-to-end solutions for artificial intelligence (AI) integration within networking environments.

Ooperon is specialises in developing, installing, and integrating personal security systems as well as security alarm and communication systems. The company primarily caters to judicial and healthcare institutions.

Founded in 2013, Optix Limited is an indigenous ICT services and system integration company focused on proffering solutions and support services to its numerous clients spread across all sectors including oil & gas, financial institutions, education, hotel and hospitality, real estates, manufacturing etc. Optix Limited offers device monitoring, enterprise voice & video services, physical security solutions and mobility services.