| Certis Group | Central | School | SO | Nil | Jurong East |
| Force-One Security | North | Data Centre | SS | SSS | Ang Mo Kio |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Admiralty |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Clementi |
| Soverus Pte Ltd | North | School | SSO | SSO | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSS | Woodlands |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Certis Group | Central | Healthcare | SO | SS | Holland Village |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Sengkang |
| SATS Ltd | East | - | OE | CSO | Marsiling |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| First Security & Private Investigation (Singapore) Pte Ltd | Central | Hotel | SSO | SSO | - |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Woodlands |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Shangri-La Rasa Sentosa, Singapore | South | Hotel | OE | SS | Sengkang |
| Legion Protection Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Sembawang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Bukit Gombak |
| Dorsett Singapore | Central | Hotel | SSO | SS | HarbourFront |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Artyzen Singapore | Central | Hotel | SS | SS | Farrer Park |
| Inhouse Employer | Central | Hotel | SO | SSO | - |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Punggol |
| ONE°15 Marina Sentosa Cove, Singapore | South | Country Club | SO | SSO | Bukit Batok |
