| Company | Timeline | Status | |
| Gibson Integrated Ltd Director • Engineer | 13 Apr 2024←1 Year 6 Months→Current | Active | |
Centri Tech (Turbo Parts) Limited Director • Engineer | 15 Sep 1994←1 Year 9 Months→11 Jun 1996 | Dissolved | |
| Foundry Equipment And Supplies Association Limited Director • Engineer | 5 Nov 1993←27 Years→1 May 2021 | Active | |
| Gibson Centri-Tech Limited Director • Engineer | 15 Dec 1991←33 Years→Current | Active | |
| Centri-Electric Limited Director • Engineer | 5 Dec 1991←33 Years→Current | Active | |
| Centri-Tech Limited Director • Company Director | 18 Mar 1991←34 Years→Current | Active | |
