| Company | Timeline | Status | |
| Windham Marine Services Limited Director • Director | 8 Sep 2010←10 Years→1 Jun 2021 | Dissolved | |
| John H.Whitaker (Tankers) Limited Director • Operations Director | 5 Jun 2001←9 Years→7 Jan 2011 | Active | |
| Ship Safe Training Group Ltd Director • Manager | 26 Jun 1997←5 Years→17 Jan 2003 | Active | |
