| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Admiralty |
| Soverus Pte Ltd | Central | Data Centre | SSS | SSS | Woodlands |
| Soverus Pte Ltd | Central | Data Centre | SSS | SSS | Woodlands |
| Prosec Services Pte Ltd | East | Data Centre | SSS | SSS | Woodlands |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Choa Chu Kang |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Woodlands |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | CSO | Hougang |
| Prosegur Singapore Pte Ltd | East | Data Centre | SSO | SSO | Potong Pasir |
| Excellent Security & Safety Pte Ltd | East | Data Centre | SSO | SSO | Pasir Ris |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Ang Mo Kio |
| Securitas Guarding Services (Singapore) Pte Ltd | North | Data Centre | SO | SSO | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SSO | Tampines |
| Force-One Security | North | Data Centre | SS | SSO | Tampines |
| Force-One Security | North | Data Centre | OE | SSO | Hougang |
| Prosec Services Pte Ltd | East | Data Centre | SSS | SSS | Ang Mo Kio |
| Premier Security Co-operative Ltd | Central | Data Centre | SO | SSS | Ang Mo Kio |
| Excellent Security & Safety Pte Ltd | North | Data Centre | SO | SSO | Ang Mo Kio |
| Force-One Security | North | Data Centre | SO | SO | Yishun |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Marsiling |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Sengkang |
