| Company | Timeline | Status | |
| U.K. Gas Technologies Limited Director • Managing Director | 10 Mar 2020←5 Years→Current | Active | |
| Gas Recovery & Recycle Limited Director • Technical Director | 26 Mar 2012←13 Years→Current | Active | |
| UK Gas Technologies Group Limited Director • Tech Director | 23 Jun 1997←23 Years→16 Mar 2021 | Dissolved | |
| Chemical Process Systems Limited Director • Tech Director | 10 Jul 1996←24 Years→18 May 2021 | Dissolved | |
| Microgas Systems Limited Director • Managing Director | 31 Mar 1992←33 Years→Current | Active | |
| Puretech Systems Limited Director • Managing Director | 6 Dec 1991←34 Years→Current | Active | |
| Puretech Process Systems Limited Director • Managing Director | 31 Mar 1991←34 Years→Current | Active | |
| Medical Gases Limited Director • Managing Director | 31 Mar 1991←34 Years→Current | Active | |
