| Company | Timeline | Status | |
| Control Engineering Associates Ltd Director • Managing Director | 24 Oct 2011←11 Years→31 Jan 2023 | Dissolved | |
| PHSS Limited Secretary • Director & Software Engineer | 3 Aug 2007←18 Years→Current | Active | |
| Industrial Software Limited Director • Software Engineer | 23 Jan 2001←24 Years→Current | Active | |
| Industrial Software Limited Secretary • Software Engineer | 23 Jan 2001←24 Years→Current | Active | |
