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| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| Warrior Security Ltd. | Manned guarding | Africa | |
| 1st American Investigative Agency | Digital video recording | United States of America (USA) | |
| 24/7 Close Protection Ltd | Physical security | United Kingdom (UK) | |
| 247 Group | Biometrics | South Africa | |
| 4Site Online Ltd. | Integrated security | Western Europe | |
| AAC Mechanical & Electrical | CCTV | United Kingdom (UK) | |
| Aarya Ites Pvt. Ltd. | CCTV | India | |
| AB Security | CCTV | United Kingdom (UK) | |
| Able Security Concepts Ltd | Manned guarding | United Kingdom (UK) | |
| Absolute Security Ltd. | CCTV | Kenya | |
| Accent Alarms, Inc | CCTV | North America | |
| ACUSTEK Ltd | Biometrics | United Kingdom (UK) | |
| AD Porta Security | Manned guarding | United Kingdom (UK) | |
| ADB Alarms Ltd | Intruder alarm | United Kingdom (UK) | |
| ADi security and surveillance | CCTV | United Kingdom (UK) | |
| Advance Peripheral Systems Ltd | Intruder alarm | United Kingdom (UK) | |
| Advanced Alarm Technologies | Intruder alarm | United States of America (USA) | |
| Advanced Security Developments | CCTV | United Kingdom (UK) | |
| Alink Ltd (Security Installers) | Integrated security | United Kingdom (UK) | |
| All Covert Security | IP networking products | United States of America (USA) | |
| ALLAS Sisteme de Securitate SRL | CCTV | Republic of Moldova | |
| Allscope Technologies Ltd. | Physical security | Nigeria | |
| Allscope Technologies Nigeria Ltd. | Global positioning systems | Nigeria | |
| Alrehab Services | Access control | Egypt | |
| Amerigard Alarm & Security Corp | Integrated security | North America | |
| Angle Security | CCTV | United Kingdom (UK) | |
| ANSCOM Limited | CCTV | Sri Lanka | |
| Antron Security | CCTV | United Kingdom (UK) | |
| AOK DIGITAL AND SECURITY SOLUTIONS | CCTV | United Kingdom (UK) | |
| Arkanics | CCTV | United States of America (USA) | |



