
| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| BQT Solutions (UK) Ltd | Access control | Global | |
| SMi Group Ltd. | Exhibition and conference organising | United Kingdom (UK) | |
| 3rd Eye Surveillance Systems | Digital video recording | United States of America (USA) | |
| 4A International, LLC | Consulting services | United States of America (USA) | |
| AAiD Security Solutions | Asset management | United States of America (USA) | |
| AB Connect Associates Ltd | Consulting services | United Kingdom (UK) | |
| Activator UK | IP networking products | United Kingdom (UK) | |
| ADT | Integrated security | South Africa | |
| ADT Fire and Security Plc | CCTV | United Kingdom (UK) | |
| Advantech, Inc. | Consulting services | United States of America (USA) | |
| Aella Consulting Group, Inc. | Consulting services | United States of America (USA) | |
| AFRISEC, LLC | Integrated security | Africa | |
| AFTEK Ltd | Door interface/controls | India | |
| After Surveillance Security Distribution | Digital video recording | United States of America (USA) | |
| Aggleton & Associates | CCTV | United States of America (USA) | |
| Ajna Consulting Solutions | Consulting services | India | |
| Alderson Clark, Ltd | CCTV | United States of America (USA) | |
| ALGIZ Services Ltd | Consulting services | Germany | |
| Allen Security & Consultant Co., Inc. | CCTV | United States of America (USA) | |
| Amerigard Alarm & Security Corp | Integrated security | North America | |
| Amplicon | IP networking products | United Kingdom (UK) | |
| Andrews International | Physical security | Global | |
| Arkanics | CCTV | United States of America (USA) | |
| ArmorGroup International plc | Manned guarding | United Kingdom (UK) | |
| ASI Advanced Security, Inc. | Intrusion detection | United States of America (USA) | |
| Asoni Communications Co., Ltd. | Consulting services | Global | |
| ASR Security Management & Consulting | Access control | United States of America (USA) | |
| AtGrun Co. Ltd. | CCTV | Taiwan | |
| Athena Research Corporation | United States of America (USA) | ||
| Atlantis Close Protection | Physical security | United Kingdom (UK) | |



