| Company | Timeline | Status | |
| McCallum Holdings Ltd Director • Director | 20 Sep 2017←8 Years→Current | Active | |
| Worldmail Limited Director • Exporter | 20 Mar 2003←22 Years→Current | Active | |
| A. McCallum (Properties) Limited Director • Exporter | 10 Dec 1993←31 Years→Current | Active | |
