| Company | Timeline | Status | |
| Dosing Systems Limited Director • Director | 17 Jun 1994←1 Year 10 Months→23 Apr 1996 | Active | |
| Dosing Systems Limited Secretary • Married Woman | 7 Jun 1994←28 Years→30 Oct 2022 | Active | |
| P E Filtration Ltd Director • Unreported | 14 Apr 1994←31 Years→Current | Active | |
| P E Filtration Ltd Secretary • Director | 14 Apr 1994←31 Years→Current | Active | |
| Pump Engineering Ltd Director • Married Woman | 17 Nov 1991←30 Years→30 Apr 2022 | Active | |
| Pump Engineering Ltd Secretary • Unreported | 17 Nov 1991←30 Years→30 Apr 2022 | Active | |
| Process Installations Ltd Director • Married Woman | 17 Nov 1991←30 Years→30 Apr 2022 | Active | |
| Process Installations Ltd Secretary • Unreported | 17 Nov 1991←30 Years→30 Apr 2022 | Active | |
