| Company | Timeline | Status | |
| TRL Limited Director • Civil Servant | 25 Mar 1996←1 Year→31 Mar 1997 | Active | |
| Transport Research Foundation Director • Company Director | 25 Mar 1996←1 Year→31 Mar 1997 | Active | |
| Institution Of Highways And Transportation(The) Director • Chartered Engineer | 7 Jul 1992←8 Years→3 Jul 2001 | Active | |
Wootton Jeffreys Consultants Limited Director • Transport Consultant | 14 Sep 1991←1 Month→8 Nov 1991 | Dissolved | |
