| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 49 PERCENT LIMITED | 08103878 | 13/06/2012 | Dissolved |
| Carbo Coal Shipping & Trading Ltd | 01630880 | 29/12/1992 | Dissolved |
| Industrial Minerals Processing Ltd | 02469823 | 13/02/1994 | Dissolved |
| Industrial Minerals Processing Ltd | 02469823 | 13/02/1992 | Dissolved |
| MINERAL PROCESSING & MANAGEMENT LIMITED | 02560525 | 20/11/1992 | Dissolved |
| Pozzotech Ltd | 03801549 | 12/07/1999 | Dissolved |
| ROCKTRON (ABERTHAW) LIMITED | 04145819 | 23/01/2001 | Dissolved |
| ROCKTRON (GALE COMMON) LIMITED | 04522697 | 30/08/2002 | Dissolved |
| Rocktron Marketing Ltd | 04492357 | 23/07/2002 | Dissolved |
| Sales Consultancy Ltd | 02468923 | 08/03/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CLUB LE BRISTOL LIMITED | 03238481 | 16/08/1996 | 26/04/1998 | Dissolved |
| MINERAL PROCESSING & MANAGEMENT LIMITED | 02560525 | 07/09/1994 | 28/11/2002 | Dissolved |
| Promintech Ltd | 03229783 | 12/04/1999 | 29/07/2005 | Dissolved |
| ROCKTON RESEARCH LIMITED | 04340588 | 30/06/2005 | 21/03/2007 | Dissolved |
| ROCKTON RESEARCH LIMITED | 04340588 | 24/03/2005 | 24/02/2012 | Dissolved |
| ROCKTRON (ABERTHAW) LIMITED | 04145819 | 30/06/2005 | 21/03/2007 | Dissolved |
| ROCKTRON (GALE COMMON) LIMITED | 04522697 | 30/06/2005 | 21/03/2007 | Dissolved |
| ROCKTRON HOLDINGS LIMITED | 07424217 | 29/10/2010 | 24/02/2012 | Dissolved |
| ROCKTRON INTERNATIONAL LIMITED | 05971625 | 18/10/2006 | 28/10/2010 | Dissolved |
| ROCKTRON INTERNATIONAL LIMITED | 05971625 | 18/10/2006 | 24/02/2012 | Dissolved |
| ROCKTRON LIMITED | 04120826 | 30/06/2005 | 21/03/2007 | Dissolved |
| ROCKTRON LIMITED | 04120826 | 07/12/2000 | 24/02/2012 | Dissolved |
| ROCKTRON SERVICES LIMITED | 07211725 | 01/04/2010 | 09/03/2012 | Dissolved |
| SSE MINERAL SOLUTIONS LIMITED | 04146274 | 30/06/2005 | 21/03/2007 | Dissolved |
| SSE MINERAL SOLUTIONS LIMITED | 04146274 | 23/01/2001 | 30/09/2010 | Dissolved |