| Company | Timeline | Status | |
| S3ia Limited Director • Company Director  | 16 Oct 2009←16 Years→Current  | Active  | |
| S3ia Limited Director • Company Director  | 16 Oct 2009←1 Day→16 Oct 2009  | Active  | |
Tiger Scheme Limited Director • Director  | 23 Apr 2007←3 Years→1 Aug 2010  | Dissolved  | |
| Silverthorn Associates Limited Director • Company Director  | 8 Feb 2005←20 Years→Current  | Active  | |
| The Institution Of Analysts & Programmers Director • Computer Manager  | 1 Jun 1995←1 Year 6 Months→10 Dec 1996  | Active  | |
