| Company | Timeline | Status | |
| Jo Plowright & Co Ltd Director • Chairman  | 18 Mar 2019←6 Years→Current  | Active  | |
| Jo Plowright & Co (Chartering) Ltd Director • Chairman  | 18 Mar 2019←6 Years→Current  | Active  | |
| Jo Plowright & Co (Tankers) Ltd Director • Chairman  | 18 Mar 2019←6 Years→Current  | Active  | |
| Liquid Commodity Solutions Limited Director • Unreported  | 31 Jan 2017←8 Years→Current  | Active  | |
| Spi Marine (UK) Limited Director • Shipping Agent  | 28 Mar 2014←11 Years→Current  | Active  | |
| H. Clarkson & Company Limited Director • Ship Broker  | 1 Aug 2007←6 Years→17 Mar 2014  | Active  | |
J.O. Plowright & Co. (Holdings) Ltd Director • Shipbroker  | 1 Sep 2001←4 Years→3 Jan 2006  | Dissolved  | |
