| Company | Timeline | Status | |
| Denholm Oilfield Services (Kazakhstan) Limited Director • Company Director  | 1 Feb 2000←2 Years 6 Months→1 Aug 2002  | Active  | |
| Denholm Shipping Company Limited Director • Company Director  | 7 Dec 1995←5 Years→15 Jun 2001  | Active  | |
| The Denholm Line Steamers Limited Director • Company Director  | 12 Jun 1992←12 Years→8 Oct 2004  | Active  | |
| J. & J. Denholm Limited Director • Company Director  | 24 Jul 1991←16 Years→18 Oct 2007  | Active  | |
| Denholm Maritime Services Limited Director • Engineer  | 1 Jul 1990←6 Years→29 Jul 1996  | Active  | |
| Denholm Brown Brothers & Company Limited Director • Company Director  | 25 May 1990←15 Years→2 May 2006  | Active  | |
