In 1983, McCullough was the inaugural Chairperson of the North Queensland Sports Foundation [REF].
McCullough's contribution to international sport included his roles as President of the International Stoke Mandeville Wheelchair Sports Federation (1996-2001), International Paralympic Committee Executive (1996-2002), and representative of the Paralympics in the IOC Evaluation Commission for the 2008 Bidding Cities (2001) [REF].