| Company | Timeline | Status | |
| Hartree Partners Advisory Services U.K. Limited Director • Natural Gas Trader | 12 Dec 2001←1 Year 11 Months→28 Nov 2003 | Active | |
| Hartree Partners Power & Gas Company (UK) Limited Director • Natural Gas Trader | 12 Dec 2001←1 Year 11 Months→28 Nov 2003 | Active | |
