| Company | Timeline | Status | |
| CC Analytics Ltd Director • Director | 7 Feb 2017←6 Years→14 Mar 2023 | Dissolved | |
| Clarkson Market Analysis Limited Director • Shipbroker | 12 Aug 2009←6 Years→2 Aug 2016 | Dissolved | |
| H. Clarkson & Company Limited Director • Shipbroker | 4 Aug 2008←8 Years→2 Feb 2017 | Active | |
| Ssy Consultancy & Research Ltd Director • Analyst | 1 Jan 2000←2 Years 6 Months→19 Jul 2002 | Active | |
| Simpson Spence Young Ltd Director • Shipbroker | 28 Apr 1997←5 Years→19 Jul 2002 | Active | |
| Gibson Shipbrokers Limited Director • Consultant | 12 Sep 1992←4 Years→25 Apr 1997 | Active | |
