| Company | Timeline | Status | |
| Highland-North Sea Limited Director • Company Director | 9 Oct 1989←33 Years→1 Feb 2023 | Active | |
| Highland Deephaven Limited Director • Company Director | 9 Oct 1989←33 Years→1 Feb 2023 | Active | |
| Resources Administration & Management Limited Director • Engineer | 30 Nov 1988←36 Years→8 Apr 2025 | Dissolved | |
