| Force-One Security | North | Data Centre | OE | SSO | Simei |
| Crowne Plaza Changi Airport | East | In-House | OE | CSO | Pasir Ris |
| Focus Security Services Pte Ltd | West | Condominium | SS | SO | Bright Hill |
| Prosegur Singapore Pte Ltd | East | Commercial | SSO | Nil | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SS | Bukit Panjang |
| Inhouse Employer | Central | School | SO | CSO | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SSS | Bedok |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Inhouse Employer | Central | School | SO | SO | Bedok |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | North | Industrial / Factory | SS | SSS | Yishun |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SO | Bukit Batok |
| Resorts World Sentosa | South | Commercial | SO | SO | Sengkang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Braddell |
| Paradox Singapore Merchant Court | Central | Hotel | SSO | SO | Bedok |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Jurong East |
| Soverus Pte Ltd | Island Wide | - | OE | SSO | Woodlands |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Toa Payoh |
| Artyzen Singapore | Central | Hotel | SS | SO | Yishun |
| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SSO | Tampines |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Tampines |
