| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Hougang |
| Star Security Services | Island Wide | - | Security Mgt | SSO | Hougang |
| Young Women's Christian Association of Singapore | Central | In-House | Security Mgt | SSO | Hougang |
| Inhouse Employer | Central | In-House | SS | SSO | Hougang |
| Force-One Security | North | Data Centre | SO | SO | Hougang |
| Force-One Security | North | Data Centre | SS | SS | Hougang |
| Force-One Security | North | Data Centre | SS | SS | Hougang |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | Hougang |
| Star Security Services | Island Wide | - | Security Mgt | SS | Hougang |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Hougang |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Hougang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Hougang |
| Securus Pte Ltd | Island Wide | - | OM | SS | Hougang |
| Force-One Security | Central | Commercial | SO | SS | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Commercial | SS | SS | Hougang |
| Elid Technology International Pte Ltd | East | Condominium | SS | SS | Hougang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | CSO | Hougang |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | Hougang |
| Inhouse Employer | West | In-House | OM | SS | Hougang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | CSO | Hougang |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Hougang |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
| Prosegur Singapore Pte Ltd | South | Commercial | SO | SO | Hougang |
| Triple ‘S’ Protection Pte Ltd | Central | Depot | SSO | SO | Hougang |
