GSL Dardan (GSLD) is the UK's leading independent provider of private security services and security systems. The company was formed in January 2009 through the merger of established companies ISL Dardan Security and Gardwell Security, which have a trading history dating back to 1973.

Guangzhou Tianyi Electronic Co., Ltd. was founded in 1996. They are a high-tech enterprise which is engaged in the research and development of intelligent equipment. They also offer integration access control solutions.

Guard Grabber is an application platform with staffing and management advantages to provide a whole range of security services, which includes private investigator, security officer, bodyguards, and security guards.

Guard it camguards manufacture security cages for CCTV cameras, PIR Detectors, lighting, etc. They also make and supply cages of any size and colour required.

Guardall Security is South Australia's Number One Security Services company, providing Electronic Security Solutions such as CCTV, Alarm Systems and Access Control through to Static Guarding, Event Security Management, Party Security, Crowd Control, Construction Site Security, Security Patrols and Alarm Response Services.

GUK manned guarding services are tailored to meet specific client needs. Businesses face generic threats and challenges, but no two businesses are exactly the same. The company's team of specialists, SIA-licensed officers go beyond securing people and property. Operating across the UK, it has built a strong capability in a range of sectors, backed by a senior management team with a proven industry track record.

GuardOne Security is a security patrol and remote video monitoring company. The company provides security guards for patrolling properties, and solutions such as video monitoring, surveillance and command centre to protect facilities and locations from theft, vandalism, and robbery.

Guardright supplies comprehensive, professional and accountable security services. The company provides an extensive range of high quality security guard services such as mobile patrols, keyholding and alarm response services, manned guarding, industrial security guards and event stewarding.

Guardsman Security supplies uniformed guard and investigative services to major industrial facilities, government entities, attorneys, hospitals, shopping centers, community colleges, parks departments, homeowner associations, office complexes, hotel chains, and construction sites. They are also a security provider to federal agencies throughout the state of Missouri.

Halogen Security Company is a provider of security solutions in West Africa. The company has developed home grown security solutions with specialisation in intrusion & fire alarms, intelligent access control systems, video surveillance systems and perimeter protection systems. Apart from this, the company also provides services including virtual and cyber security solutions, event security management, and manned guarding.

Hancock Security is a wholly indigenous firm owned and managed by a group of highly skilled resourceful professionals in the security field. The company provides services such as home protection, life safety services, home automation, medical emergency response, badge identification, video security and biometrics for high-level access control.

Haphil Africa Securities is a young, fast growing security firm dealing with the provision of manned guarding, electronic security, security surveys, private investigations and general security consultancy in risk prevention, deterrence and minimisation.

HAWK Security Services has a top performing record in its field, due to the continuous training of its hand-picked staff and the excellence of its services and products.

Herongrange Group Limited offer a comprehensive service to determine the best solution for specific security requirements. They take care of the design, installation and maintenance of security services, offering solutions to every market sector.

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Vacant properties can be vulnerable to all kinds of unwanted attention, from mindless vandalism to illegal occupation, and might be unoccupied for any number of reasons. HG Security Ltd's unique on-site security solution will protect property and save the potential cost of remedial works by deterring any unwanted visitors. Their system is proven and effective, guarding properties all over the UK since 1992.

HighCom Security Services is a comprehensive provider of high-end security solutions, which specialises in protective services, security systems, consulting and training.

HillQuest Security is a premier licensed and bonded security firm, dedicated to servicing clients throughout the State of California. The company is dedicated to providing unique, personalised and comprehensive security solutions to meet each and every client’s needs and budget. HillQuest's commercial security services include bank security, construction security, healthcare security, retail security, school security, and event security.

HS Security is a prestigious group of companies specialising in highly advanced physical security solutions. This includes products for temporary and permanent security in both urban and industrial environments. HS Security delivers the most cutting-edge, effective and holistic security solutions for facility and site security applications.