| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Sengkang |
| A-SAT Pte Ltd | North | Mix-Development | SSO | SO | Clementi |
| Inhouse Employer | East | In-House | SO | SSS | MacPherson |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | SS | Admiralty |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SSO | Jurong East |
| Bulls-Eye Security Services Pte Ltd | North | Condominium | SS | SS | Woodlands |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Eagle I Security Services Pte Ltd | East | - | SO | CSO | Bedok |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | Woodlands |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Woodlands |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | MacPherson |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SSO | SSO | Ang Mo Kio |
| Star Security Services | Island Wide | - | OE | SS | Woodlands |
| SMS Security | Central | Retail / Mall | SO | SO | Toa Payoh |
| Soverus Pte Ltd | North | School | SO | SO | Serangoon |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Simei |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Woodlands |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Punggol |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
