| Company | Timeline | Status | |
| Tennant Metallurgical Group Limited Director • Technical Director | 29 Nov 1999←4 Years→11 Aug 2004 | Active | |
Fesil (Alloys) Limited Director • Metallurgist | 14 Sep 1991←22 Years→16 Sep 2013 | Dissolved | |
| Elkem Dronfield Ltd Director • Production Director | 30 May 1991←18 Years→3 Jun 2009 | Active | |
