| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SS | Woodlands |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SS | Farrer Park |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | CSO | Marsiling |
| Union Security Services Pte Ltd | North | Healthcare | SO | SO | Woodlands South |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | CSO | Toa Payoh |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | CSO | Toa Payoh |
| William Secure Solutions Pte Ltd | East | Healthcare | SO | SO | Simei |
| Inhouse Employer | Central | Healthcare | OE | SSO | Serangoon |
| Inhouse Employer | Central | Healthcare | OE | SSO | Hougang |
| Jasa Investigation & Security Services Pte Ltd | East | Healthcare | SO | SO | Pasir Ris |
| Jasa Investigation & Security Services Pte Ltd | East | Healthcare | SO | SO | Punggol |
| Inhouse Employer | Central | Healthcare | OE | SSO | Hougang |
| Mainguard Security Services (S) Pte Ltd | East | Healthcare | SSO | SSO | Simei |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | CSO | Toa Payoh |
| Certis Group | Central | Healthcare | SO | SO | Punggol |
| Mainguard Security Services (S) Pte Ltd | East | Healthcare | SSO | SS | Punggol |
| Certis Group | Central | Healthcare | SO | SS | Holland Village |
| Apro Asian Protection Pte Ltd | East | Healthcare | SSO | SSO | Boon Lay |
| Fervour Pte Ltd | East | Healthcare | SO | SO | Eunos |
| Bulls-Eye Security Services Pte Ltd | East | Healthcare | SO | SO | Bukit Gombak |
| Certis Group | South | Healthcare | SS | SS | Punggol |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SSS | Sembawang |
| Jasa Investigation & Security Services Pte Ltd | West | Healthcare | SSO | SSO | Bukit Gombak |
| Premier Security Co-operative Ltd | Central | Healthcare | SSO | SS | Toa Payoh |
| Inhouse Employer | Central | Healthcare | OE | SS | Sengkang |
