| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Cranemec Engineering Ltd | SC134916 | 31/01/1992 | Dissolved |
| Hi-Lo (Plant & Warehousing) Ltd | SC147828 | 02/12/1993 | Dissolved |
| Hi-Lo (Plant & Warehousing) Ltd | SC147828 | 02/12/1993 | Dissolved |
| Highland Blends Ltd | 02968964 | 16/09/1994 | Dissolved |
| Nigg Decommissioning Ltd | SC293002 | 15/11/2005 | Dissolved |
| ROSS COUNTY FOOTBALL CLUB LIMITED | SC033275 | 20/04/2009 | Bronze |
| Ram Energy Products Ltd | SC217280 | 02/04/2001 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AWS OCEAN ENERGY LIMITED | SC268223 | 20/12/2006 | 25/01/2008 | Amber |
| GLOBAL ENERGY (GROUP) LIMITED | SC106415 | 16/03/1989 | 02/12/2009 | Silver |
| GLOBAL ISLEBURN LIMITED | SC089895 | 31/05/1989 | 02/12/2009 | Dissolved |
| Highland Fertilisers Ltd | SC120854 | 18/10/1991 | 14/02/1996 | Dissolved |
| MACKAY STEELWORK & CLADDING LIMITED | SC161195 | 26/06/1998 | 29/07/2005 | Silver |
| NORTH (SCOTLAND) INDUSTRIES LIMITED | SC225938 | 30/11/2007 | 23/11/2010 | Dissolved |
| ROSS COUNTY FOOTBALL CLUB LIMITED | SC033275 | 22/08/2003 | 25/05/2005 | Bronze |
| SAFETY WELDING AND LIFTING (INTERNATIONAL) LIMITED | SC147636 | 07/06/1994 | 27/06/2008 | One Red Flag |
| SAFETY WELDING AND LIFTING HOLDINGS LIMITED | SC338325 | 24/09/2015 | 25/09/2015 | Bronze |
| W.H. MACKAY & SONS LIMITED | SC053572 | 31/03/1992 | 24/10/1997 | Bronze |