| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SS | SS | Choa Chu Kang |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Farrer Park |
| William Secure Solutions Pte Ltd | Central | Condominium | SSO | SS | Farrer Park |
| Premier Security Co-operative Ltd | Central | Commercial | SSO | SS | Farrer Park |
| Concorde Security Pte Ltd | Central | Commercial | SO | SS | Farrer Park |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | Pioneer |
| Security Masters Pte Ltd | Central | - | Security Mgt | SS | Choa Chu Kang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Choa Chu Kang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Pioneer |
| Inhouse Employer | Island Wide | - | OE | SS | Pioneer |
| Securus Pte Ltd | Island Wide | - | OE | SS | Pioneer |
| Inhouse Employer | West | School | OE | SS | Pioneer |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SS | Pioneer |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | Pioneer |
| SATS Ltd | Island Wide | - | OM | SS | Pioneer |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Pioneer |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Pioneer |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Bukit Panjang |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| TwinRock Global | Central | - | Security Mgt | SS | Bukit Batok |
