| Inhouse Employer | Island Wide | Construction | OM | SSO | Hougang |
| Force-One Security | North | Data Centre | SS | SSS | Sengkang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SSO | SS | Pioneer |
| Inhouse Employer | Central | In-House | SS | SS | Choa Chu Kang |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Punggol |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SSO | Tampines |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Ademco Security Pte Ltd | Island Wide | - | OM | SSS | Bukit Panjang |
| Soverus Pte Ltd | Island Wide | - | SSS | SSS | Dover |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Pasir Ris |
| Force-One Security | North | Data Centre | SS | SSO | Sembawang |
| ESA Security Pte Ltd | South | Hotel | SSO | SO | Sembawang |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Bedok |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Simei |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | Farrer Park |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | SS | SS | Admiralty |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SO | Bukit Batok |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSO | Jurong East |
