| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Sengkang |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Sengkang |
| Artyzen Singapore | Central | Hotel | SS | SS | Sengkang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Sengkang |
| Certis Group | Island Wide | - | SSO | SS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Sengkang |
| SMS Security | East | Mix-Development | SSO | SS | Simei |
| Certis Group | East | - | SO | SS | Simei |
| Certis Group | East | Gov Building | SO | SS | Simei |
| Premier Security Co-operative Ltd | Island Wide | - | SS | SS | Bukit Panjang |
| Certis Group | Central | School | SSO | SS | Farrer Park |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Pasir Ris |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Bukit Panjang |
| Securus Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Punggol |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Punggol |
| SATS Ltd | Island Wide | - | OM | SS | Punggol |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Punggol |
| Inhouse Employer | Island Wide | Construction | OM | SS | Tampines |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Geylang Bahru |
| Ademco Security Pte Ltd | Island Wide | - | OE | SS | Geylang Bahru |
| Strive Security Pte Ltd | Island Wide | - | OE | SS | Geylang Bahru |
