| Company | Timeline | Status | |
| Stone Manganese Marine Limited Director • Group Chairman | 28 Oct 2005←11 Years→26 Apr 2017 | Active | |
| Langham Farms Limited Director • Group Chairman | 22 Aug 2003←13 Years→26 Apr 2017 | Active | |
| Vaculug Limited Director • Co Chairman | 2 Apr 2001←4 Years→28 Jul 2005 | Active | |
| Stone Marine Services Limited Director • Director | 24 Dec 1999←17 Years→26 Apr 2017 | Active | |
| Portland Harbour Development Limited Director • Group Chairman | 8 Aug 1997←19 Years→26 Apr 2017 | Dissolved | |
| Portland Pilotage Limited Director • Group Chairman | 20 Jan 1997←20 Years→26 Apr 2017 | Dissolved | |
| Portland Harbour Services Limited Director • Group Chairman | 13 Dec 1996←20 Years→26 Apr 2017 | Dissolved | |
| Portland Stevedoring Limited Director • Group Chairman | 13 Dec 1996←20 Years→26 Apr 2017 | Dissolved | |
| Portland Port Limited Director • Group Chairman | 25 Mar 1996←21 Years→26 Apr 2017 | Active | |
| Portland Harbour Authority Limited Director • Group Chairman | 13 Dec 1994←22 Years→26 Apr 2017 | Active | |
