| Union Security Services Pte. Ltd. | East | Data Centre | SS | CSO | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | CSO | Bedok |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Inhouse Employer | West | School | OE | SSS | Jurong East |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Bukit Panjang |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Inhouse Employer | West | School | SO | CSO | Bukit Panjang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| AETOS Holdings Pte Ltd | West | - | SO | SSO | Boon Lay |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| SATS Ltd | Island Wide | - | OM | SSO | Sengkang |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SS | SS | Tampines |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Bedok |
| IGC Security Services Pte Ltd | South | Commercial | SS | SSS | Pioneer |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Prospect Protection Pte Ltd | West | Industrial / Factory | SO | Nil | - |
| Inhouse Employer | Island Wide | - | OE | SO | Tiong Bahru |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | - |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Pioneer |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
