| Company | Timeline | Status | |
| Granta Laboratories Limited Director • Director | 25 Jan 2012←13 Years→Current | Active | |
| Granta Laboratories Limited Secretary • Engineering Scientist | 1 Jan 1994←31 Years→13 May 2025 | Dissolved | |
| Sherwood Scientific Limited Director • Engineering Scientist | 3 Jun 1992←32 Years→28 Apr 2025 | Active | |
| Granta Laboratories Limited Director • Engineering Scientist | 28 Feb 1992←33 Years→13 May 2025 | Dissolved | |
