| Securus Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSS | Jurong East |
| Mainguard Security Services Singapore Pte Ltd | Central | Gov Building | SS | SS | Choa Chu Kang |
| SMS Security | East | Condominium | SO | SO | Kaki Bukit |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SO | SO | Simei |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Acestes Pte Ltd | Island Wide | - | OM | SSS | Bedok |
| Certis Group | Island Wide | Commercial | SO | SO | Sengkang |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SO | Bukit Batok |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Construction | SO | SO | Bukit Gombak |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SO | SO | MacPherson |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Pedro Investigations & Security Services Pte. Ltd. | Central | Industrial / Factory | SO | SO | Woodlands |
| Aedge Services Pte Ltd | Island Wide | - | OM | SSS | Commonwealth |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Prosec Services Pte Ltd | East | Data Centre | SSS | SSS | Woodlands |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Bukit Batok |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Woodlands |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| Kingston Property Maintenance Services Pte Ltd | West | Condominium | SO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Bras Basah |
