| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SO | Woodlands |
| Strive Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Aigle Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Aigle Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Ang Mo Kio |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Ang Mo Kio |
| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SSS | Ang Mo Kio |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Ang Mo Kio |
| Strive Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Inhouse Employer | Island Wide | Construction | OM | SO | Yishun |
| Inhouse Employer | Island Wide | Construction | OM | SO | Choa Chu Kang |
| Aedge Services Pte Ltd | Island Wide | - | OM | SO | Bukit Panjang |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Novena |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSO | SS | Yishun |
| A-SAT Pte Ltd | Island Wide | - | SSO | SS | Yishun |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSO | SS | Yishun |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | SS | CSO | Bedok |
| A-SAT Pte Ltd | Island Wide | - | SSO | SSS | Boon Lay |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | - | SS | SS | Bukit Panjang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | SS | SS | Bukit Panjang |
| Primesafe Security & Investigation Pte Ltd | Island Wide | Commercial | SS | SS | Tampines |
