AeroSpace and Defence Industries Association of Europe represents the aeronautics, space, defence and Security Industries in Europe with the objective of promoting and supporting the competitive development of the sector.

AFIMAC offers emergency response, strike security, risk management & business continuity services to image conscious companies across North America. AFIMAC partners with clients to protect people & property both during times of crisis & regular business operations. AFIMAC offers an assortment of pre-crisis contingency planning & premium security & emergency response solutions to government and businesses. AFIMAC also offers protection services.

Africa Security Forum is a membership-based government organisation, located in Barking, United Kingdom. They provide policing, counter terrorism, border defence, local, state, national security services.

Advanced Guarding Services provide security guarding services for all industries in Kings Lynn, Norfolk as well as across the UK. The company's primary mission is to offer reliable and compliant security services to all areas of industry. A professional organisation, sympathetic to the limitations of our clients businesses and with 100% focus on customer service at every level within the company.

AIMS secure and manage services of Touristic Villages – Hotels – communities – hospitals, etc. Their mission is to be the market leader in fields such as Property Management and Security Services Hotel auditing and consultancy services and Web development.

AKBA Technology provides security and defense solutions to government and public institutions as well as private sector corporations. AKBA provides solutions such as drone detection system, Visually Intelligent Surveillance Solution, Suicide Bomb Detection and many more. AKBA also delivers air traffic management systems to the airports in Turkey.

Al Murabit Security Services (AMS-91) is the first security company established within the Harlow Group. It specialises in security for Oil and Gas companies and has had years of experience in this field with the likes of BP and Shell. AMS-91 is managed by Expatriate Security Specialists from the UK, complimented by English speaking Iraqi locals, ensuring they have a fusion of security knowledge and country know-how.

Al Thaware Security Services (ATS109) is an international security and risk management company. Founded in Iraq with headquarters in Baghdad, Al Thaware is the country’s largest asset based private security company with over 400 B6 vehicles.

Alarm Response & Keyholding specialise in providing professional key holding and alarm response services across the UK to secure home or business and ensure the safety of family and staff.

As a leading private security company, ALGIZ Services has expertise in close personal protection, residential protection, maritime security, transport & logistics security, tracking services, security consulting, etc. The company serves wide variety of clients. ALGIZ Surveillance and Control Centre provides 24/7 services such as panic or emergency alarm buttons, camera observation & site monitoring, etc.

ALIAR11 has a team of highly trained personnel to provide comprehensive solutions that range from advice and needs assessment, to implementation, monitoring, training and after-sales technical assistance. They also provide access control solutions, video surveillance systems, security barriers and much more.

ATS (All Time Security) Ltd is an independent service company that supplies security guards for both private and commercial industry. Providing a high standard also security at short notice. They are based in High Wycombe , Buckinghamshire, serving the area within 50 miles of High Wycombe.

Allander Security welcomes enquiries from fellow security services providers seeking sub-contracting partners. It aims to develop and implement a security solution for its clients, taking into consideration their specific needs and existing security weaknesses. It is dedicated to ensuring quality of service provision to the customer comes first, particularly at the public interface; a company using new and innovative ideas to benefit all.

Alliance Building Services provides commercial facility-related services. Alliance Building Services is comprised of Alliance Maintenance, Alliance Security, Alliance Restoration, Alliance Electrical and Alliance Painting & Flooring. The company offers facility maintenance and janitorial services, security systems, building restoration, painting, flooring and lighting and electrical solutions.

Allied Universal (formerly known as AlliedBarton) provides unparalleled service, systems, and solutions to serve, secure, and care for the people and businesses in our communities. The company was formed through a merger of AlliedBarton Security Services and Universal Services of America.

Allstate Security first established a home base in San Diego, California, USA and rapidly built a reputation for high levels of training and professionalism. Their unsurpassed industry standard of service boosted growth, allowing them to branch into other areas.

ALNPK Consulting is a global partner in the acquisition, distribution and sale of Quality CCTV companies and equipment.

Founded in 2001, Alrehab Services Co. continues to provide high quality personnel for all aspects of Services. The company firmly believes in a polite, professional approach and manner when dealing with their client base. Their aims are to ensure: • Customer needs are fully catered for and met with a high quality service. • All services delivered are in line with current organisational and government legislation guidelines.

Amir Sepehr Mihan Institute is a reliable option for the protection and care of any property by using the technical knowledge of expert experts and valuable experiences of managers who have thirty years of experience in the most sensitive and high security and law enforcement positions. They offer the best and most efficient security strategies to protect organisations, commercial complexes, localities, private banks, institutions, etc.

Andrews International (AI) was founded in Los Angeles in 1988 in response to the growing demand among Hollywood studios for security forces with advanced skills and training. The security company operates offices throughout the United States, Canada, and Central America. AI security officers are protecting life and property at national landmarks, major tourist attractions, industrial sites, and educational and financial institutions.

Angle Security was established in the United Kingdom with a global mission 'Affordable Security Solutions', which includes Smart DVR (Digital Video Recorder) systems, Smart NVR (Network Video Recorder) systems along with security solutions, systems and professional services.

Apache Security Services is a security company that provides a wide range of protection services such as guarding services, events security services, hospitality security services, VIP protection, CCTV installation and monitoring and many more.

Apollo International, headquartered in Massachusetts and New York, provides security services nationally and internationally with the help of strategic partnerships and regional, in-market security agents. Their experienced leaders ensure all clients have access to the personalised security expertise no matter what the situation, where the security need exists, or when it is required.

Appelcryn and Associates provides security gaurds, armed protection and armed escorts, armed Airprot shuttle services, alarm systems, CCTV cameras, vehicle tracking, area patrols, armed response.

Archangel Investigations and Protection Inc is a full service private investigation, security and personal protection company that offers expertise, professional and totally confidential services to attorneys, corporations, small businesses and private individuals. They provide training, manned guarding, professional fraud detection and claim mitigation services.

Arion Security (UK) Ltd is a total security solution provider. It specialises in security guarding, event Security, key holding, manned security, static security guards, mobile patrol, retail security,key holding and alarm response services to industrial and manufacturing facilities, building and construction industry, commercial properties and retail establishments all over the England.