| Company | Timeline | Status | |
| Institution Of Highways And Transportation(The) Director • Consulting Engineer  | 25 Jul 1991←2 Years 11 Months→8 Jul 1994  | Active  | |
| Mackenzie Construction Limited Director • Consultant Civil Engineer  | 6 Mar 1990←3 Years→5 Apr 1993  | Active  | |
| First Glasgow (No.1) Limited Director • Chartered Civil Engineer  | 11 Oct 1989←3 Years→19 Feb 1993  | Active  | |
