| Company | Timeline | Status | |
| The Aldeburgh Library Foundation Director • Retired | 14 Jul 2023←2 Years 4 Months→Current | Active | |
| The Copyright Hub Foundation Director • Retired | 1 Aug 2018←7 Years→Current | Active | |
| Image Discovery Limited Director • Software Consultant | 6 Jun 2014←9 Months→1 Apr 2015 | Dissolved | |
| ARC Software Consultancy Limited Director • Company Director | 16 Feb 2009←12 Years→30 Mar 2021 | Active | |
| Virtual Track Software Limited Director • It | 19 Sep 2001←24 Years→Current | Active | |
| ARC Software Consultancy Limited Secretary • Unreported | 7 Sep 1992←16 Years→16 Feb 2009 | Active | |
| Unicorn School Limited(The) Director • Mathematician | 21 Mar 1992←11 Months→5 Mar 1993 | Active | |
