| Company | Timeline | Status | |
| Maunsell International Projects Limited Director • Consulting Engineer | 19 Dec 1991←4 Years→12 Nov 1996 | Dissolved | |
| Aecom Limited Director • Consulting Engineer | 19 Dec 1991←1 Year 9 Months→1 Oct 1993 | Active | |
Remco Systems Limited Director • Consulting Engineer | 11 Dec 1991←4 Years→31 Oct 1996 | Dissolved | |
