| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Simei |
| York Hotel (Private) Limited | Central | In-House | SS | SS | Sengkang |
| Crowne Plaza Changi Airport | East | In-House | OM | CSO | Toa Payoh |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | Nil | Bukit Gombak |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSO | Hougang |
| York Hotel (Private) Limited | Central | In-House | OM | CSO | Marsiling |
| FormTeam Consultancy Pte Ltd | Central | Industrial / Factory | SSO | SSO | Pasir Ris |
| Excellent Security & Safety Pte Ltd | South | Commercial | SSO | SSO | - |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SO | SO | Boon Lay |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Tampines West |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | Pioneer |
| Grand Copthorne Waterfront Hotel | Central | Hotel | Security Managment | CSO | Jurong East |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSS | Geylang Bahru |
| SATS Ltd | Island Wide | - | Inves | SS | Sengkang |
| Certis Group | Central | Commercial | SO | SSO | Bukit Batok |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | SS | SS | Lavender |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
| Inhouse Employer | Central | Hotel | OE | SSO | Hougang |
| Star Security Services | Island Wide | - | Security Mgt | Nil | Yishun |
| Inhouse Employer | West | In-House | OM | CSO | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SS | Clementi |
| SMS Security | East | Condominium | SO | SO | Bedok |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Yew Tee |
