| Company | Timeline | Status | |
| Twinseal Limited Director • Director | 17 Mar 2003←22 Years→Current | Active | |
| Twinseal Limited Director • Director | 17 Mar 2003←21 Years→30 Sep 2024 | Active | |
| A. T. Cowen & Son Ltd Director • Company Director | 24 Apr 2002←21 Years→20 Jun 2023 | Dissolved | |
| Cowen Windows Limited Director • Company Director | 24 Nov 1995←28 Years→1 Mar 2024 | Active | |
