| Company | Timeline | Status | |
| Annesley Harris Ltd Director • Engineer  | 8 Mar 2019←6 Years→Current  | Active  | |
| Intermet Refractory Products Limited Director • Director  | 4 Mar 2008←1 Month→21 Apr 2008  | Active  | |
| Nushef Limited Director • Engineer  | 2 Oct 2006←3 Years→28 Feb 2010  | Dissolved  | |
| Sheffield Refractories Limited Director • Engineer  | 2 Oct 2006←3 Years→28 Feb 2010  | Active  | |
| George Johnson Refractories Limited Director • Engineer  | 2 Oct 2006←3 Years→28 Feb 2010  | Dissolved  | |
| TJS Holdings Limited Director • Engineer  | 22 May 2006←3 Years→26 Mar 2010  | Dissolved  | |
