| Company | Timeline | Status | |
| McDermott Energy Solutions (UK) Limited Director • Director  | 25 Jun 2003←2 Months→31 Aug 2003  | Active  | |
John Brown Hydrocarbons Limited Director • Business Development Director  | 28 Nov 2001←1 Year 6 Months→30 May 2003  | Dissolved  | |
| Eric Johnson,Stubbs(Scotland)Limited Director • Chemical Engineer  | 4 Jun 1993←32 Years→Current  | Active  | |
| Worley Field Services Limited Director • Chemical Engineer  | 31 Mar 1992←3 Years→1 Jun 1995  | Active  | |
