| Company | Timeline | Status | |
| Robbin Engineering Limited Director • Director | 17 Aug 1992←23 Years→31 Mar 2016 | Active | |
| Robbin (Avon) Limited Director • Engineer | 29 Jun 1991←30 Years→22 Mar 2022 | Dissolved | |
| Alide Plant Services Limited Director • Engineer | 29 Jun 1991←11 Years→14 Oct 2002 | Active | |
Oversight Limited Director • Company Director | 31 Dec 1990←25 Years→31 Mar 2016 | Dissolved | |
