| Company Name | Type | Status |
|---|---|---|
| JOHNSON BURGLAR ALARMS COMPANY LIMITED | Private company limited by shares | Live |
| GUARDWAY ALARMS COMPANY LIMITED | Private company limited by shares | Live |
| PROTECT ALARMS LIMITED | Private company limited by shares | Dissolved |
| SAFEWAY ALARMS LIMITED | Private company limited by shares | Dissolved |
| TAC CAR ALARMS AND AUDIO SPECIALISTS LIMITED | Private company limited by shares | Live |