| # | Entity | Status | State |
|---|---|---|---|
| 1 | 28 668 919 891 SIGNALLING AUSTRALIA GROUP PTY LTD |
ABN Active | QLD 4560 |
| 2 | 35 138 023 917 SIGNAL & ASSET ENGINEERING GROUP PTY LTD |
ABN Active | NSW 2774 |
| 3 | 35 618 319 930 SIGNAL GROUP PTY LTD |
ABN Active | VIC 3149 |
| 4 | 37 089 093 867 SIGNAL POINT RIVERINE ENVIRONMENT GROUP |
ABN Active | SA 5214 |
| 5 | 61 167 938 678 SIGNAL GROUP HOLDINGS PTY LTD |
ABN Cancelled | QLD 4209 |
| 6 | 63 655 406 769 MULPHA SIGNAL GROUP PTY LTD |
ABN Active | QLD 4212 |
| 7 | 72 663 592 238 BLUE SIGNAL GROUP PTY LTD |
ABN Active | VIC 3150 |
| 8 | 76 626 761 993 SIGNAL INTERNATIONAL GROUP PTY LTD |
ABN Active | NSW 2000 |
| 9 | 76 668 907 935 SIGNALLING AUSTRALIA GROUP SERVICES PTY LTD |
ABN Active | NSW 2041 |
| 10 | 92 668 905 566 SIGNALLING AUSTRALIA GROUP HOLDINGS PTY LTD |
ABN Active | NSW 2041 |
| 11 | 74 110 573 101 H2OZ PTY. LIMITED SIGNAL GROUP AUSTRALIA |
ABN Active | QLD 4034 |
| 12 | 47 144 465 912 LAZY EMPIRE PTY LTD Signal Agency Group |
ABN Active | VIC 3184 |