| Company | Timeline | Status | |
| Wheeler Precision Limited Director • Director | 4 Oct 2004←2 Years 11 Months→5 Sep 2007 | Active | |
| Van Leeuwen Limited Director • Director | 1 Oct 2000←6 Years→5 Sep 2007 | Active | |
| Van Leeuwen Tubes Limited Director • Director | 1 Oct 2000←6 Years→5 Sep 2007 | Active | |
| Van Leeuwen Pipe & Tube Limited Director • Director | 13 Jul 1991←5 Years→1 Aug 1996 | Dissolved | |
| Van Leeuwen Tubes Limited Director • Director | 13 Jul 1991←5 Years→1 Aug 1996 | Active | |
