| Company | Timeline | Status | |
| Aecom Limited Director • Civil Servant | 5 Mar 2002←1 Year 8 Months→15 Nov 2003 | Active | |
| Maunsell International Projects Limited Director • Consulting Engineer | 16 May 1997←3 Years→31 Jul 2000 | Dissolved | |
| Aecom Limited Director • Consulting Engineer | 1 Oct 1993←6 Years→21 Jul 2000 | Active | |
