| Abigroup Limited | Melbourne Stadium Limited |
| Aerostructures | Melbourne University |
| AirServices Australia | Melbourne Water |
| Airways New Zealand | Metro Water Limited |
| Alluvium | Mid Coast Water |
| Ambidji Aviation Services | Monash University |
| Ansaldo - STS | Montgomery Watson Harza |
| ANZ Banking Group Limited | NSW Rual Fire Services |
| Australian Rail Track Corporation | Nyrstar |
| ATCANZ | Parsons Brinckerhoff |
| Austin Hospital | Port of Brisbane |
| Australasian Lubricants Manufacturing Company | Port of Melbourne Corporation |
| Australian Marine Pilots Association | Port Phillip Sea Pilots |
| Australian Marine Safety Authority | Powercor & CitiPower |
| Barwon Water | Queensland Rail |
| BHP Billiton | Rail Corporation New South Wales (RailCorp) |
| BlueScope Steel Limited | Roan Prospecting & Mining |
| Bovis Lend Lease | ROCARM |
| Brisbane City Council | Royal Perth Hospital |
| Civil Aviation Authority, New Zealand | Silcar |
| Civil Aviation Safety Authority, Australia | Silver Fern Shipping |
| ConnectEast | Snowy Hydro Limited |
| Connex Melbourne | South Port, New Zealand |
| CSIRO | Southern Rural Water |
| Dairy Australia | STaPS Alliance |
| Dampier Port Authority | Swinburne University of Technology |
| Department of Consumer and Employment Protection | Sydney Ports |
| Department of Defence | Tasports |
| Department of Environment and Conservation | Teekay Shipping (Australia) |
| Department of Human Services | TEMCO |
| Department of Infrastructure | Thale |
| Department of Justice | Thiess John Holland |
| Department of Sustainability and Environment | Toll Transport |
| Department of Transport | Transend |
| Department of Transport and Regional Services | TransGrid |
| Department of Treasury and Finance | Transpower New Zealand |
| Edith Cowen University | Transurban City Link |
| Energy Australia | V/Line Passenger |
| Energy Safe Victoria | VicRoads |
| Engineering Education Australia | VicTrack |
| Geelong Grammar School | Warringah Council |
| Gladstone Area Water Board | Water Agencies Portfolio Management |
| Goulburn Murray Water | Warnambool Cheese & Butter Factory |
| Gregory Burgess Architects | Western Power |
| Ground Probe | Western Water |
| Leighton Contractors | |
| Main Roads Queensland | |
| Mainco | |
| Maritime Safety Queensland | |
| Marlborough District Council, New Zealand | |
| Melbourne City Council |