G4S Technology is a global market leader in providing fully integrated security solutions (including access control and video) protecting everything from small offices and schools to large multi-national organisations and high security Government facilities around the world.

Gadusa security is a technology-focused security company with a global approach. They are a knowledge leader in end-to-end security services. They deliver the most effective security solutions by offering customised services such as corporate guards & security services, cyber security and network security solutions, supply, installation & maintenance of security equipment, surveillance & intrusion detection, CCTV, alarm and protection solutions.

Galaxy Systems delivers high quality contract and permanent IT staff augmentation services for both consulting and project-based engagements. Galaxy’s primary goal is to help clients achieve increased IT-dependent revenue, operational efficiency and customer satisfaction.

GC2 Associates are providers of integrated security solutions and factory acceptance testing.

They introduce themselves as a 25 year old telecom, security & I.T solutions company. Their services include the Supply, Design, Integration, Installation, Consultancy and Maintenance of Telecom Security & I.T related products.

Genie designs, develops, manufactures and supplys Biometric and Access Control systems, Network IP CCTV, HD Analogue CCTV, and a whole array of useful accessories associated with security systems. They are a British company, based in Stevenage, Hertfordshire.

Security system and Fire and Safety. Distrubuter, reseller and Installer.

Geoffield Nigeria Limited offers a wide range of security engineering services designed to meet the everyday security challenges of government, business, hotels, factories, hospitals, schools, banks, estates, law enforcement agencies and private estates. Whether your needs are surveillance, fire detection, access control or general security. Geoffield has on offer the services, products and advice that would meet your needs.

Established in 2006, GFEQS offers high quality and reliable security and fire services. Services include Fire-Extinguishing Systems, Fire and Security Alarms, CCTV Systems, Access Control Systems, Turnstiles and barriers, Doors, Gates, Safes and locks.

Security Systems Installation Specialist. GK Alarms Ltd install and maintain burglar alarms, CCTV, card access and door entry systems for domestic and commercial clients. In 2009 they were awarded a certificate of Excellence by SSAIB for achieving ongoing high security system installation standard based on British standards.

GKT Group delivers electrical and security services in Newcastle, the Hunter Valley and surrounding areas. GKT Group Security Newcastle offers the full range of security services from 24 hour alarm monitoring, CCTV, alarm system installation to security guards. The company installs the latest technology for home, work place or work site.

Global Access Control Systems offers commercial perimeter security gates and parking control equipment. The company installs and offers services for analogue and digital systems, cameras and dome, DVRs, NVRs and encoders as well as video analytics and mobile systems. Global Access Control Systems is a member of ASIS.

Global Eye Technology offers expert advice and strategic planning to help businesses leverage technology for optimal performance and competitive advantage.

Global Monitoring Solutions, LLC is designed, built, and operated through the view of a dealer. Using the most advanced technology means, the client’s home or business is protected 24 hours a day. The access-restricted, state-of-the-art facility has met and/or surpassed the most stringent standards as determined by Underwriter Laboratories (U.L). They are utilising the technology of the best in the industry.

Based in Slough, Global Security specialise in providing leading security system solutions for home and business. From simple intruder alarms to multi-building digital CCTV & Biometric access control systems, the company tailor security solutions to meet individual needs. Global Security installation engineers are companys staff and not sub-contracted in.

Gloucester Security Alarms (GSA) provide security solutions to properties throughout the South West, UK. They specialise in Intruder alarms, Fire alarms systems, CCTV, Access control and Emergency lighting.

The Goldilock premise is that data and systems should not be physically connected to the Internet when not using them, but that they need to be available from anywhere, immediately. Goldilock's non-IP controlled Drawbridge technology applies the same principle and technology to network architecture.

GoldTouch Security Systems is a premier security systems integration company based in Nairobi, Kenya, with another office in Nakuru. Through the utilisation of CCTV, access control, intrusion, and audio components, it designs and installs systems for a wide variety of entities.

GoVanguard is a boutique cybersecurity firm founded in 2013 and based out of Manhattan, focused on providing high-quality penetration testing, malicious adversary simulation, threat intelligence services, and cybersecurity strategy services.

Gowell group technology Co.,limited is a hi-tech enterprise specialising in developing, manufacturing and marketing CCTV products including Standalone DVR, DVR Kits, IP Camera, Analogue Camera, etc.