| Company | Timeline | Status | |
| Mott Macdonald Sa Limited Director • Chartered Engineer | 16 Apr 1992←2 Months→30 Jun 1992 | Active | |
| Ewbank Preece Limited Director • Chartered Engineer | 16 Apr 1992←2 Months→30 Jun 1992 | Active | |
| Ewbank And Partners Limited Director • Chartered Engineer | 1 May 1991←1 Year 2 Months→30 Jun 1992 | Active | |
