| Company | Timeline | Status | |
| Three Cliffs Geomechanical Analysis Limited Director • Finite Element Analysis Consultant | 4 Mar 2008←17 Years→Current | Active | |
| Rockfield Holdings Limited Director • Company Director | 25 Nov 1999←8 Years→1 Sep 2008 | Active | |
| Rockfield Software Limited Director • Director | 22 Jun 1992←17 Years→23 Nov 2009 | Active | |
