Active Security Group Ltd. designs and installs electronic security and safety systems for a wide range of commercial customers and local authorities, together with many others from the retail and residential sectors. It aims to provide a service to the customer that is of a demonstrably higher calibre than the competitors, in the Design, Installation and Maintenance of Electronic Security `systems in accordance with best professional practice.

ADB Alarms have been been installing security and alarm systems for more than 25 years. The company was founded by Managing Director, Alan Bennett, who has been in the security business since 1980, so you can be sure you are in safe hands. The company continually stay up-to-date with the latest security and fire alarm technologies, so the customers are assured of the highest levels of security and safety at all times.

ADS Group is the UK trade organization representing aerospace, defense, security and space sectors. ADS is focused on representing ambitions and concerns of these industries in the UK and overseas to key stakeholders, government, and the media. A dedicated team of events specialists co-ordinate & manage a comprehensive events program encompassing everything from large international trade shows through to table top events & networking lunches.

Advance Security Solutions helps secure premises by installing bespoke security systems, which range from premium CCTV systems, intruder alarms and long lasting electric gates. Advance Security Solutions offers security solutions for domestic as well as commercial clients.

Advance Vision Group (AVG), incorporating Wychwood Security Services and Feel Secure Services, is a Oxfordshire based security company. As an NSI Gold installer for intruder alarms and a quality assured ISO 9001 company, it operates to the latest British and European Standards EN 50131-1. AVG provides designing, installation and maintenance of security systems like intruder alarms, CCTV, access control, gates, and fire protection systems.

Advanced Overwatch are one of Northern Ireland's leading CCTV System, Burglar Alarm and Security System installation companies offering the latest in security technology, installed by expert engineers.

Advanced Security Alarm Protection Ltd., provide a full design, installation and maintenance service for electronic security systems including Access Control, C.C.T.V. and Intruder Alarm systems. All systems are individually designed to ensure reliability for a discerning public and private sector market.

Advanced Security Systems UK Ltd is a company which, by understanding the principles of threat and risk assessment, combined with the desire to deliver the best quality installations, have achieved a reputation for providing cost effective, high quality security solutions. Technical Excellence, Integrity and Enthusiasm’

Here at Aegis Integrated Security Limited specializes in security systems across Suffolk, Essex, Norfolk, Colchester and Cambridge. The company offers intruder alarms, fire alarm, CCTV, gates & automation, access control and barriers. Aegis Integrated's high profile clients include local councils, schools, water companies,and The Environment Agency.

AEL Systems offer a wide range of service and maintenance contracts for Electrical, Lighting, Fire & Security systems regardless of who originally installed the system. The company is also specialize in providing a wide range of bespoke and custom designed gate automation and access control systems in order to create the complete solution for the perimeter security.

Aeon Systems Limited is a privately owned company established in 1999. Its core business is the supply, installation and maintenance of electronic security systems. The company provide services to support the customers to maximize their quality security systems installation.

From Access Control to Smoke Screen Systems, the company is able to supply, install and maintain these kinds of systems as well as a range of Safes. AES Commenced Trading in 1984, the company can provide security systems such as CCTV, Smoke screen, key holding, fire alarm systems, access control, and business security systems etc.

Fire and Security Installers offers a wide range of services including fire alarm installation and maintenance, CCTV installation, intruder alarm servicing and much more. The company designs, installs, and maintains all types of fire security & electrical systems for businesses across the south east and beyond.

Agri-cctv Ltd provides security solutions for rural and farming communities, providing tools to protect home or business. The company provides solutions based on intruder alarm, CCTV, remote security, tracking, automation, security lighting and IP secure installations.

AGS Security offer intruder and fire alarms, CCTV, automated gates and barriers, emergency lighting, access control and phone systems. The company use industry experience and expertise to suggest and develop integrated, hi-tech solutions that deliver big benefits in terms of flexibility and productivity, as well as security, compliance and control.

Based in the UK, AI Security specialises in the design, supply, installation, service and repair of all electronic security systems including CCTV, access control, door entry and intercom, automated gates, traffic barriers, intruder and fire protection. The company offers services to NHS hospitals and clinics, shopping centers, business parks, schools, commercial offices and other businesses etc. AI-Security is part of Vigilant Eagle Ltd.

AI Security, based in Southend-on-Sea, is a security system supplier specializing in installation, repair, and maintenance services for security systems, CCTV, alarm systems, and access control systems since 2003. They operate across London, Essex, and the Home Counties.

Aico, an Ei Company, are the European Market Leader in Home Life Safety. All Aico alarms meet UK standards and offer a variety of sensor types to guarantee protection for every home, the cornerstone of which is delivering education, quality, service and innovation.

Aim is a specialist alarm monitoring company based in Manchester that is part of Tyco International Ltd. Operating autonomously, their customer base is predominantly made up of independent alarm installers from around the UK, who do not have their own Alarm Receiving Centre.