| Company | Timeline | Status | |
| The Lion Tube And Steel Company Limited Director • Director | 13 Jul 1991←9 Years→1 Oct 2000 | Dissolved | |
| Downings Steel Limited Director • Director | 13 Jul 1991←9 Years→1 Oct 2000 | Dissolved | |
| Van Leeuwen Pipe & Tube Limited Director • Director | 13 Jul 1991←9 Years→1 Oct 2000 | Dissolved | |
| Van Leeuwen Tubes Limited Director • Director | 1 Jan 1970←30 Years→1 Oct 2000 | Active | |
