| Company | Timeline | Status | |
| John N Dunn Group Limited Director • Company Director | 29 Jan 2008←7 Years→29 Jul 2015 | Active | |
| Natural Gas Services Training (Newcastle) Limited Director • Company Director | 31 Oct 2003←11 Years→29 Jul 2015 | Active | |
| John N. Dunn (Leeds) Limited Director • Company Director | 28 Jan 1991←17 Years→15 Apr 2008 | Active | |
