| Company | Timeline | Status | |
| Intermensa Limited Director • Solution Designer | 1 Jul 2003←7 Years→1 Feb 2011 | Active | |
| Mensa International Limited Director • Project Manager | 1 Sep 1999←24 Years→27 Oct 2023 | Active | |
| British Mensa Limited Director • Computing Team Leader | 26 Sep 1998←25 Years→22 Oct 2023 | Active | |
| 8ain Limited Secretary • Senior Analyst | 11 Jun 1994←7 Years→1 Oct 2001 | Active | |
| 8ain Limited Director • Senior Analyst | 11 Jun 1994←25 Years→5 Feb 2020 | Active | |
