- Acsentra
 - Specialises in corporate security policy, crisis management, risk assessment, and planning and security audit advice for the U.K. and worldwide. - County Security Systems (CSS)
- Southampton - Installs and maintains security systems, intruder alarms, CCTV, access control, and face recognition systems for business and domestic applications throughout U.K. and Europe.
- Elmdene International
- Portsmouth - Custom manufacturer of security products including sirens, power supplies, beacons and contacts.
- Mastiff Electronic Systems Ltd.
- Aldershot - Design, manufacture and install door access control systems for large and small organisations.
- Tecton CCTV
- Eastleigh - Designers, developers, and manufacturers of close circuit video equipment for commercial, security, government, military, and broadcast applications.
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