| Company | Timeline | Status | |
| Zeusa Energy Ltd Director • Professor Emeritus | 29 May 2025←4 Months→Current | Active | |
| Zeusa Ltd Director • Professor Emeritus | 24 Jan 2025←9 Months→Current | Active | |
| Reuben Power Plc Director • Consultant | 23 Apr 2009←3 Months→22 Jul 2009 | Active | |
