| Company | Timeline | Status | |
| Control Engineering Associates Ltd Director • Managing Director | 24 Oct 2011←11 Years→31 Jan 2023 | Dissolved | |
| Industrial Software Limited Director • Software Engineer | 23 Jan 2001←24 Years→Current | Active | |
| System & Technical Solutions Limited Director • Software Specialist | 24 Aug 1998←2 Years 5 Months→31 Jan 2001 | Active | |
