| Company | Timeline | Status | |
| Johnson Hall Environmental Limited Director • Director | 21 Oct 2009←16 Years→Current | Active | |
| Johnson, Hall & Company Limited Director • Company Director | 1 Jan 1999←26 Years→Current | Active | |
| Johnson Hall Services Limited Director • Company Director | 16 Dec 1998←27 Years→Current | Active | |
| Johnson, Hall & Company Limited Secretary • Secretary | 9 Sep 1994←31 Years→Current | Active | |
| Johnson, Hall & Company Limited Director • Site Engineer | 8 Sep 1991←3 Years→9 Sep 1994 | Active | |
