| Company | Timeline | Status | |
| Costain Engineering & Construction Limited Director • Civil Engineer | 28 Feb 1993←1 Year 8 Months→31 Oct 1994 | Active | |
| Costain Engineering & Construction (Overseas) Limited Director • Civil Engineer | 28 Feb 1993←1 Year 8 Months→31 Oct 1994 | Active | |
| Costain Oil, Gas & Process Limited Director • Civil Engineer | 28 Feb 1993←1 Year 8 Months→31 Oct 1994 | Active | |
| Costain Oil, Gas & Process (Overseas) Limited Director • Civil Engineer | 28 Feb 1992←2 Years 8 Months→31 Oct 1994 | Active | |
