Within such a path, the next two higher career grades are usually senior research fellow and professorial fellow.
In 1982 he retired, however he remained active as a Professorial Fellow until 1986.
In 2005, he was appointed as a visiting professorial fellow at the University of Wollongong.
He worked as a professorial fellow at the University of Western Australia, focusing on politics, public policy and international relations.
He also led a number of trade missions, joined company boards and served as a professorial fellow at Monash University.
He is a Professorial Fellow at the University of Melbourne.
In 1991 he was made Professorial Fellow at the University of Wollongong.
Bilson has recently completed two years at the Melbourne Business School where he served as a professorial fellow.
There are also many Professorial Fellows who hold their fellowships by reason of their University post.
He also holds an appointment as Professorial Fellow at Roehampton University.