| Company | Timeline | Status | |
| Trevor Bolton Engineering Limited Director • Director | 14 Aug 2003←4 Years→3 Apr 2008 | Dissolved | |
| Trevor Bolton Engineering Group Limited Director • Director | 24 May 2002←5 Years→3 Apr 2008 | Active | |
| Trevor Bolton Engineering Services Limited Director • Engineer | 31 Dec 1990←17 Years→3 Apr 2008 | Active | |
