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.

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

Absolute Security Limited provides commercial and residential security all over the region. Absolute Security offers manned guarding, perimeter system, alarms, access control and CCTV. The company has installed electric fences at various commercial and private sites. The systems it installs range from the single camera application to multiple cameras and multiple sites which can be monitored and controlled from a single point.

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.

Acctiv8 supply the most flexible & reliable wireless burglar alarm security and safety system on the market. Acctiv8 Wireless Burglar alarms are unique because they not only protect your valuables from intruders but also act as a remotely monitored safety system.

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.

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.

Airbus designs, manufacturers and delivers aerospace products, services and solutions. The company manufacturers commercial aircraft and provides innovative technology and reliable security services in the space and defence sectors. Airbus is also focusing on manned and unmanned vehicles for urban mobility and hybrid and electric propulsion systems for cleaner aviation.

ALARM CENTER LIMITED, a subsidiary of SURCOMTEC GROUP was established in 2000 as a professional electronic security protection and services company, specialised in providing 24hrs remote electronic monitoring of home and office facilities for panic, fire and perimeter alarms; and respond accordingly to save lives.

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.

All City Strike Force Security Services is a Ghanaian licensed professional private security organization. It provides complete and comprehensive security solutions to a vast array of companies, government institutions, and the general public as a whole.

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.

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.

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.

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.

Arfeen Security Ltd is an SIA approved Security Company based in Derby (East Midland) providing Manned Guarding, Locking & unlocking, Key Holding, and Mobile patrol services.