| # | Entity | Status | State |
|---|---|---|---|
| 1 | 19 050 611 437 DONNELLEY SIMPSON CLEARY CONSULTING ENGINEERS PTY. LTD |
ABN Active | NSW 2069 |
| 2 | 25 000 788 812 J.R. SIMPSON (ENGINEERS) PTY LTD |
ABN Cancelled | NSW 2036 |
| 3 | 29 093 691 813 SIMPSONS ENGINEERING PTY. LTD. |
ABN Cancelled | VIC 3564 |
| 4 | 36 163 256 237 SIMPSON ENGINEERING GROUP PTY LTD |
ABN Active | QLD 4118 |
| 5 | 46 067 543 453 M.A. SIMPSON ENGINEERING PTY LTD |
ABN Active | VIC 3067 |
| 6 | 80 149 266 115 Simpson Associates Forensic Engineering Pty Ltd |
ABN Cancelled | NSW 2067 |
| 7 | 93 128 155 564 Ross Simpson Valves & Engineering Pty Ltd |
ABN Active | NSW 2036 |
| 8 | 46 067 543 453 M.A. SIMPSON ENGINEERING PTY LTD M A SIMPSON ENGINEERING PTY LTD |
ABN Active | VIC 3067 |
| 9 | 59 000 743 199 ROSS SIMPSON INVESTMENTS PTY LIMITED ROSS SIMPSON ENGINEERING PTY LTD |
ABN Active | NSW 2022 |