| Company | Timeline | Status | |
| Parker Environmental Services Holdings Limited Director • Unreported | 11 Apr 2025←6 Months→Current | Active | |
| Pendrea Barns Management Company Limited Director • Managing Director | 6 Feb 2023←1 Year→28 Feb 2024 | Active | |
| Nuclear Ductwork Systems Limited Director • Unreported | 24 Oct 2012←13 Years→Current | Active | |
| Nuclear Ventilation Systems Limited Director • Unreported | 24 Oct 2012←13 Years→Current | Active | |
| Nuclear Manufacturing Projects Limited Director • Sales Director | 7 Dec 2011←13 Years→Current | Active | |
| Nuclear Manufacturing Services Limited Director • Sales Director | 7 Dec 2011←13 Years→Current | Active | |
| Nuclear Ventilation Projects Limited Director • Sales Director | 7 Dec 2011←13 Years→Current | Active | |
| Parker Nuclear Services UK Limited Director • Sales Director | 7 Dec 2011←13 Years→Current | Active | |
| Parker Environmental Services Limited Director • Sales Director | 13 Apr 1999←26 Years→Current | Active | |
