| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SO | Choa Chu Kang |
| First Security & Private Investigation (Singapore) Pte Ltd | West | Condominium | SS | SO | Bukit Panjang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Sengkang |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| PICO Guards Pte Ltd | South | - | SSS | SSS | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Star Security Services | Island Wide | - | Security Mgt | SS | - |
| Force-One Security | Central | Commercial | SO | SS | Toa Payoh |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Hougang |
| Inhouse Employer | Island Wide | - | OE | SSO | Boon Lay |
| Soverus Pte Ltd | Central | Industrial / Factory | SS | CSO | Ang Mo Kio |
| Force-One Security | Central | Commercial | SO | SSO | Woodlands |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Bukit Panjang |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Choa Chu Kang |
| Shangri-La Rasa Sentosa, Singapore | South | Hotel | OE | SSO | Hougang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Force-One Security | North | Data Centre | OE | CSO | Toa Payoh |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Commercial | SSO | SSO | - |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Mountbatten |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Bukit Panjang |
| Force-One Security | North | Data Centre | OE | SSS | Toa Payoh |
| Star Security Services | Island Wide | - | OE | CSO | Bedok |
