| Company | Timeline | Status | |
| Boost Data Limited Director • Computer Consultant | 23 Feb 1996←29 Years→Current | Active | |
| International Network Technologies Organization Limited Director • Computer Scientist | 4 Mar 1994←31 Years→Current | Active | |
| Casemaker Limited Director • Publisher | 30 Sep 1993←32 Years→Current | Active | |
| Peter Blackburn Limited Secretary • Director | 1 Oct 1991←8 Years→10 Mar 2000 | Active | |
| Peter Blackburn Limited Director • Consultant | 31 Mar 1991←34 Years→Current | Active | |
