| Company | Timeline | Status | |
| Dames & Moore Limited Director • Business Executive | 25 Nov 2002←1 Year 7 Months→1 Jul 2004 | Dissolved | |
| URS Europe Limited Director • Business Executive | 29 Jan 1999←5 Years→1 Jul 2004 | Active | |
| Woodward-Clyde Limited Director • Business Executive | 29 Jan 1999←5 Years→1 Jul 2004 | Dissolved | |
| URS Corporation Limited Director • Business Executive | 29 Jan 1999←5 Years→1 Jul 2004 | Active | |
| Thorburn Colquhoun Holdings Limited Director • Business Executive | 29 Jan 1999←5 Years→1 Jul 2004 | Active | |
