Geoffrey Stuart Garside

Avastra Sleep Centres Ltd. operates sleep diagnostic clinics. The company provides a comprehensive range of services and products to the large population of sleep disorder sufferers as well as offers in-laboratory testing, ambulatory testing and a wide range of products for treating sleep disorders. Avastra is a leader in conducting clinical trials for research organizations. The company was founded on September 9, 2000 and is headquartered in Brisbane, Australia.

Australian Institute of Co. Directors is a non-profit organization that provides leadership on director issues. It offers governance education, director development, and advocacy. The organization was founded in January 1, 1990 and is headquartered in Sydney, Australia.

CPA Australia Ltd. is an Australian company that has been operating since 1954 and provides education, training, technical support, and advocacy services in the accounting profession. The private company is based in Southbank, Australia and has subsidiaries in Hong Kong. The company engages with governments, regulators, and industries to advocate for policies that stimulate sustainable economic growth. With over 166,000 members working in 100 countries and regions, CPA Australia is one of the world's largest accounting bodies. It was founded in 1886 by Andrew Lyell, Arthur Cleveland, Benjamin Doughty Smith, Thomas Brentnall, John McAlister Howden, Charles Morell Holmes, William Crellin, and Edward Langton. Andrew Paul Hunter has been the CEO of the company since 2018.

Delta SBD Ltd. engages in the provision of contract mine services for the underground coal industry. The company was founded on August 10, 2007 and is headquartered in Campbelltown, Australia.