| Focus Security Services Pte Ltd | Central | Retail | SSO | SSO | Tampines |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SSO | SSO | Tampines |
| AGS Integration Pte. Ltd. | Central | Commercial | SSO | SSO | Tampines |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SSO | SSO | Tampines |
| Paradox Singapore Merchant Court | Central | Hotel | SSO | SS | Choa Chu Kang |
| Amara Singapore | South | In-House | SSO | SS | Yishun |
| GCH Pte. Ltd. | Central | In-House | SSO | SS | Yishun |
| Inhouse Employer | South | Hotel | SSO | SS | Yishun |
| Certis Group | Island Wide | - | SSO | SSO | Woodlands |
| Bulls-Eye Security Services Pte Ltd | Island Wide | - | SSO | SSO | Woodlands |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SSO | SSO | Ang Mo Kio |
| Paradox Singapore Merchant Court | Central | Hotel | SSO | SS | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Premier Security Co-operative Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SSO | SSO | Toa Payoh |
| Excellent Security & Safety Pte Ltd | West | Commercial | SSO | SSS | Clementi |
| Kingston Property Maintenance Services Pte Ltd | East | Condominium | SSO | SS | Aljunied |
| Jasa Investigation & Security Services Pte Ltd | West | Healthcare | SSO | SSO | Bukit Gombak |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Commercial | SSO | SS | Choa Chu Kang |
| Dorsett Singapore | Central | Hotel | SSO | SS | HarbourFront |
| Dorsett Singapore | Central | Hotel | SSO | SS | HarbourFront |
| Grand Copthorne Waterfront Hotel | Central | In-House | SSO | SS | HarbourFront |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Simei |
| Prosegur Singapore Pte Ltd | East | Data Centre | SSO | SSO | Potong Pasir |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SSO | SSO | Choa Chu Kang |
