| Company | Timeline | Status | |
| Clyde Process Pension (Trustees) Limited Director • Retired | 16 Nov 2007←1 Year 2 Months→3 Feb 2009 | Active | |
Sturtevant Engineering Company Limited Director • Projects Director | 8 Aug 1991←1 Year 8 Months→14 Apr 1993 | Dissolved | |
Clyde Sturtevant Limited Director • Projects Director | 8 Aug 1991←2 Years 7 Months→11 Mar 1994 | Active | |
