| Company | Timeline | Status | |
| Optima Energy Systems (Europe) Ltd Director • Director | 26 Feb 2014←6 Years→2 Dec 2020 | Dissolved | |
| Optima Energy Management Holdings Ltd Director • Energy Management Consultant | 27 May 2009←11 Years→2 Dec 2020 | Insolvency | |
| Optima Energy Services Ltd Director • Management Consultant | 21 Oct 2004←21 Years→Current | Active | |
| Optima Energy Services Ltd Secretary • Management Consultant | 21 Oct 2004←3 Years→29 Feb 2008 | Active | |
| Spark Energy Systems Ltd Director • Energy Management Consultant | 8 Apr 1992←28 Years→2 Dec 2020 | Liquidation | |
