| Company | Timeline | Status | |
| Milbank Limited Director • Director | 10 Mar 2000←25 Years→Current | Active | |
| Dirk Advanced Building Materials Limited Director • Director | 28 Mar 1991←34 Years→Current | Liquidation | |
Dirk Blastgrit Distribution Limited Director • Director | 28 Mar 1991←28 Years→9 Jul 2019 | Dissolved | |
