| Company | Timeline | Status | |
| Population Matters Director • Retired Physicist | 17 Nov 2007←1 Year 11 Months→7 Nov 2009 | Active | |
| Rhopoint Instruments Limited Director • Physicist | 1 Feb 1997←9 Months→31 Oct 1997 | Active | |
| The Era Foundation Limited Director • Physicist | 17 May 1992←4 Years→5 Sep 1996 | Active | |
