1GS Security Services provides a wide range of security services across the capital, the UK and around the world. With over 40 years' combined experience provides a range security services to a wide variety of clients in both the public and private sectors. 1GS Security Services include manned guarding, retail security, door supervision, corporate security, CCTV & alarm, among others.

Based in Doncaster, 1st Security provides SIA Approved provides security services to meet a wide range of facilities needs, from the management of reception services and night patrols to static gatehouse services, event stewards/door supervisors, store detectives, CCTV monitoring and mobile security patrols services.

365 Patrol Ltd. offers effective and affordable security services to Calgary’s businesses, residences, and industry. Their experienced, professional security guard units provide reliable construction site security, oilfield security services, Calgary private security, event security, home security, and much more.

4Front Security Ltd offers security services and CCTV installation throughout Nottingham and the UK as well as a range of other wireless security systems.

4TRESS SERVICES LTD is a fully License bound, and insured private company, registered in the United Kingdom and a leader in providing high quality and effective service. The company believes in partnering with companies to enhance their security and cleaning needs. All their services are specifically designed around clients needs.

5 Star Security is a provider of full time law enforcement security services with only all active duty law enforcement officers security option. Their services include special event security, personal or executive protection, holiday or retail security, and construction or traffic control.

999 South Group Ltd serves as a competent and reliable partner. Their renowned service delivery and a willingness to meet customer expectations to a high standard is a mantra both understood and delivered by the company's staff. They deliver security systems, fire appliances and personnel for enterprises and events.

A 2 Z Security Services is an acclaimed firm of security professionals with a reputation for both effective security solutions and the use of innovative technology. The company specializes in providing armed and unarmed security specialist services.

AAA Security Service was founded over a decade ago with the belief that security begins with well trained & trust worthy officers. AAA Security provides services in all the areas of security and they have clients ranging from Government to Hospitals and Apartment Complexes to even Night Clubs.

ABM is a leading provider of facility solutions with over 100,000 employees in 350+ offices deployed throughout the United States and various international locations. ABM's comprehensive capabilities include facilities engineering, HVAC, electrical, parking and security, provided through stand-alone or integrated solutions. ABM provides custom facility solutions in urban, suburban and rural areas to properties of all sizes.

With nearly two decades of highly rated service, AOS is one of the leading security companies in the UK. AOS recently achieved a score of 163 following the Security Industry Authority ACS audit, which places AOS in the top 1% of companies in the Approved Contractor Scheme for the second year running.

Access-Ability UK Ltd was founded in 1999 by the current MD Rick Allan and Mark Walker, who at the time, was employed by PAC International. The strong connection with PAC was the catalyst for creating a company to design, install and maintain high end access control systems. Access-Ability UK Ltd have the necessary depth of experience and skills, to establish effective security installations for all types of business.

Ace Security provides construction site security, protecting both people and property. Its security guards are trained to look out for potential dangers and ensure they are taken care of before someone hurts themselves. The security guards are available around the clock to protect building and construction sites at any time. Ace Security also offers security services for business events, sport events, festivals, concerts, parties and more.

Actemium is the VINCI Energies brand dedicated to the industry. Focusing on continuous optimisation of industrial performance, Actemium accompanies customers in a smooth way into the new industrial era. The network, comprising more than 400 agile & self-learning Business Units specialised by market segment, enables a customized approach, presenting multi-technical, multi-site, and multi-country solutions.

Ad Hoc Property Management offers property security solutions to European market leaders. The company protects vacant properties using the Property Guardian model, ensuring such properties are not left to become derelict. Ad Hoc offers solutions for threats such as squatting and asset stripping through socially responsible property protection.

AD Porta are a dedicated railway security specialist. They are currently providing security to major rail projects in the London area as well as trackside security during upgrade and enabling works.

ADA systems is a wholesale supplier and distributor of Security, safety, & Automation products (CCTV, Home security systems, Video Door phones, Attendance & access control systems, automatic gate opening systems & barriers,etc.). ADA's strategy has been to provide quality products at competitive pricing to the dealers.

Ademco Security Group is a leading provider of security solutions in Asia with extensive experience in delivering innovative and comprehensive electronic security, fire detection and monitoring systems to institutional, commercial and government organisations.

ADP Security Systems provides electronic systems as well as manned guarding in Hampshire, Sussex, Surrey, Dorset and Berkshire. The company's forté is in tailoring a mix of flexible security elements, covering static manned guarding, mobile, electronic/CCTV and physical security.

ADS Security Guards is a licensed security guard and patrol agency that offers commercial and residential security throughout the Bay Area. They take great pride in being the premier security guard company in San Francisco, San Jose, and Oakland for more than 15 years.

Advantage Security, Incorporated (ASI) is a locally owned and operated full service security provider with an unmatched reputation as the leading provider throughout Colorado. They offer the following services: unarmed security officers, mobile patrol, integration & technology, concierge services, executive protection, event security and investigations & consulting.

Aegis Group is a total Security and Facilities management company. At Aegis Group they offer a full range of security and facilities management services, from basics like Manned Security Guarding, cleaning, to high-end specialist services like Asbestos Removal and disposal.

Heading an industry group focused on unmanned solutions, systems and subsystems, Aeronautics Ltd, provides integrated turnkey solutions based on unmanned systems platforms, payloads and communications for defence and civil applications.