| Company | Timeline | Status | |
| Glasgow Steiner School Ltd Director • Lecturer | 31 Mar 2011←13 Years→29 Oct 2024 | Dissolved | |
| UK Systems Society Secretary • University Lecturer | 6 Sep 2005←1 Year 12 Months→4 Sep 2007 | Active | |
| UK Systems Society Director • University Lecturer | 20 Jul 1999←8 Years→4 Sep 2007 | Active | |
