| # | Entity | Status | State |
|---|---|---|---|
| 1 | 32 190 529 529 BG&E PTY LIMITED & HDR PTY LIMITED |
ABN Active | QLD 4000 |
| 2 | 61 519 553 253 ARUP PTY LIMITED & HDR PTY LIMITED |
ABN Active | QLD 4000 |
| 3 | 86 751 216 864 HDR PTY LIMITED & WSP AUSTRALIA PTY LIMITED |
ABN Active | QLD 4000 |
| 4 | 40 323 658 848 ARUP AUSTRALIA PTY LTD & HDR PTY LIMITED |
ABN Active | QLD 4000 |
| 5 | 79 868 099 833 AURECON AUSTRALASIA PTY LTD & HDR PTY LIMITED |
ABN Active | QLD 4000 |
| 6 | 76 158 075 220 HDR PTY LIMITED |
ABN Active | QLD 4000 |
| 7 | 82 138 071 913 HDR PTY. LIMITED |
ABN Cancelled | NSW 2228 |
| 8 | 92 112 322 835 HDR Aged Care Services Pty Limited |
ABN Cancelled | VIC 3752 |