| AETOS Holdings Pte Ltd | Island Wide | Mix-Development | APO | SSS | Boon Lay |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Bedok |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Inhouse Employer | West | Industrial / Factory | SO | CSO | Boon Lay |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Inhouse Employer | North | Industrial / Factory | SSO | SSO | Yishun |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Inhouse Employer | Central | Hotel | SO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SSO | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | SSO | Nil | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Bras Basah |
| Inhouse Employer | West | In-House | OM | SSS | Sengkang |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | SSS | Bedok |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SO | Woodlands |
| Fervour Pte Ltd | North | Retail | SO | SO | Aljunied |
| Pan Pacific Singapore | South | In-House | Security Mgt | SS | Kranji |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| Force-One Security | North | Data Centre | SS | SSO | Sembawang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Queenstown |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | - | SS | SSS | Tampines West |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SSO | SSS | Pasir Ris |
