| Company | Timeline | Status | |
| J.F. Irvine Sawmills Limited Director • Director | 26 Jul 1989←36 Years→Current | Active | |
| J.F. Irvine Sawmills Limited Secretary • Unreported | 26 Jul 1989←36 Years→Current | Active | |
| J.F. Irvine Sawmills Limited Secretary • Unreported | 26 Jul 1989←35 Years→3 Jun 2025 | Active | |
| J.F. Irvine Sawmills Limited Director • Director | 26 Jul 1989←35 Years→3 Jun 2025 | Active | |
