| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Tampines |
| Crowne Plaza Changi Airport | East | In-House | OE | SSS | Tampines |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Inhouse Employer | Island Wide | Construction | OM | SS | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | North | Data Centre | SO | SSO | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SSO | Tampines |
| Force-One Security | North | Data Centre | SS | SSO | Tampines |
| Union Security Services Pte Ltd | East | Condominium | SS | SSO | Tampines |
| SATS Ltd | Island Wide | - | OM | SS | Tampines |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Tampines |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SS | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSS | Tampines |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SSS | Tampines |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| TwinRock Global | Central | - | Security Mgt | SS | Tampines |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | Tampines |
| York Hotel (Private) Limited | Central | In-House | OM | SSS | Tampines |
| SATS Ltd | Island Wide | - | OM | SS | Tampines |
