| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSS | MacPherson |
| Resorts World Sentosa | South | Commercial | SO | Nil | Jurong East |
| C&W Services (S) Pte Ltd | Central | Gov Building | SO | SO | Mountbatten |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| Inhouse Employer | East | In-House | SO | SS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SS | Simei |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Pasir Ris |
| Elitez Security Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| Inhouse Employer | West | Industrial / Factory | SO | SSS | Yishun |
| Inhouse Employer | North | Industrial / Factory | SSO | SO | Yishun |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SS | SO | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines |
| FormTeam Consultancy Pte Ltd | Central | Condominium | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Soverus Pte Ltd | Central | Data Centre | SSS | CSO | Clementi |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Managment | SS | Jurong East |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Commonwealth |
| Inhouse Employer | North | In-House | SO | CSO | Yishun |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Woodlands |
| Focus Security Services Pte Ltd | North | Condominium | SS | SSS | Yishun |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SO | Choa Chu Kang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | Nil | Yishun |
| Inhouse Employer | Central | In-House | SSS | CSO | Woodlands |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
