- Sydney Metro
- Sydney Trains
- Transport for NSW
- Turner and Townsend
- Novo Rail Alliance
- RailCorp (Communications & Control Systems)
- Laing O’Rourke
- Advisian P/L
- JMD Rail
- O’Donnell Griffin
- John Holland
- Argus Telecommunications
- ESAT Telecom (Ireland)
- Telstra
- Broadspectrum
- North Projects