| Company | Timeline | Status | |
| Integrated Heat Exchange Ltd Director • Director | 12 Nov 2020←4 Years→Current | Active | |
| Hieta Technologies Ltd Director • Director | 31 Aug 2011←10 Years→13 Jan 2022 | Active | |
| Sustainable Engine Systems Ltd Secretary • Company Director | 10 Jun 2005←3 Years→17 Nov 2008 | Active | |
| Novera Energy Generation No. 1 Limited Director • Company Director | 16 Oct 1998←1 Year 5 Months→31 Mar 2000 | Active | |
| Sustainable Engine Systems Ltd Secretary • Economist | 23 Sep 1993←11 Years→8 Jan 2005 | Active | |
| Sustainable Engine Systems Ltd Director • Consultant | 14 Dec 1991←33 Years→Current | Active | |
| Verco Advisory Services Limited Director • Economist | 13 Mar 1991←9 Years→20 Apr 2000 | Active | |
