National Security Systems Group are security specialists and installation company. Based in Essex, the company provide every type of security system including burglar alarms, CCTV, and access control and door entry systems. National Security Systems help its clients choose the security systems and products alarm systems that provide the level of security needed and offer the best value.

With over 40 years of heritage in electronic manufacturing services, NEOTech focuses on low-medium volume/high-mix, high-complexity products primarily in the defence/aerospace, industrial and medical device design, and manufacturing field. Their business is all about converting innovative product technology into state-of-the-art engineered products.

Network Security and Fire, based in Hampshire has acheived NSI Gold Status for installation and maintenance of CCTV, Intruder Alarms, Fire Alarms and Access Control as well as The BAFE SP203 accreditation for fire alarms. The company is one of the most experienced in the south with a strong focus on customer care. Network Security and Fire maintains the highest level of standards throughout every project regardless of its size.

New Path is a family of independent regional fire safety and security companies. It serves business customers throughout Southern England, helping them protect their premises, assets, and most importantly their people. New Path group companies cover the installation, maintenance, and servicing of fire alarms, extinguishers, emergency lighting, CCTV, access control, intruder alarms, and door entry systems.

Newark Alarm Systems offices in Derbyshire, Lincolnshire and Yorkshire specialises in the design, installation and maintenance of Intruder Alarms, CCTV and Access Control Systems. The company have been helping to protect properties, businesses and homes making them a safer place. Newark Alarm Systems secuirty systems are individually designed to suit the specific needs and requirements of its customers.

Nexus Fire & Security Ltd is specialist in all aspects of electronic fire and security, from simple CCTV systems, reporting to your smartphone or notebook, to fully functional cameras monitored remotely by the 24-hour manned central station, fire alarms designed for early detection to save lives and property, intruder alarms to help prevent unauthorised entry and access control systems designed to ensure entry is only by authorised staff.

nmcn plc - Asset Security, provide end to end physical and electronic security services. Turnkey services included security consultancy and advice, system design, installation, integration, commissioning, testing and maintenance. ‘Full Asset Life-cycle Thinking’ across all projects, in all secure environments. Provider of temporary security solutions via our fleet of specialist surveillance equipment to protect remote sites.

North London Fire & Security Systems Ltd provides specialist services in the design, installation & maintenance of Intruder & Fire Alarm Systems, CCTV, Door Access & Automated Barrier/Gates, extinguisher and ememrgency lighting systems. Based in London, the company is an NSI NACOSS Gold approved installer, and holds a certificate of quality assurance meeting the requirements of BS EN ISO 9001:2000.

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.

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.

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.