| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BLACKROCK GOLD LIMITED | 02980859 | 25/07/2001 | Strike Off |
| R.T.Z. Pension Plan Trustees Limited | 01267348 | 30/08/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BALFOUR BEATTY PLC | 00395826 | 01/09/2003 | 31/12/2010 | Silver |
| BLACKROCK WORLD MINING INVESTMENT COMPANY LIMITED | 02871024 | 25/07/2001 | 09/08/2012 | Gold |
| BLACKROCK WORLD MINING TRUST PLC | 02868209 | 25/07/2001 | 09/08/2012 | Silver |
| BORAX EUROPE LIMITED | 00036374 | 01/04/1993 | 04/07/2000 | Bronze |
| ERM GROUP HOLDINGS LIMITED | 05593398 | 08/12/2005 | 31/10/2006 | Dissolved |
| ERM HOLDINGS LIMITED | 04067993 | 18/09/2001 | 15/11/2005 | Dissolved |
| NOVAR ELECTRICAL HOLDINGS LIMITED | 00866782 | 28/02/1993 | 31/03/1993 | Gold |
| NOVAR NOMINEES LIMITED | 00582704 | 28/02/1993 | 31/03/1993 | Dissolved |
| NOVAR PROJECTS LIMITED | 00814030 | 28/02/1993 | 31/03/1993 | Dissolved |
| Novar Electrical Devices & Systems Ltd | 00732615 | 28/02/1993 | 31/03/1993 | Dissolved |
| R T Group Plc | 02904614 | 01/03/2000 | 18/10/2002 | Dissolved |
| RAILWAY SAFETY | 03937800 | 12/02/2001 | 31/03/2002 | One Red Flag |
| RALLIP HOLDINGS LIMITED | 00775347 | 28/02/1993 | 31/03/1993 | Dissolved |
| RIO TINTO MINERALS LIMITED | 01523652 | 11/05/1993 | 31/12/2000 | Dissolved |
| RIO TINTO PENSION FUND TRUSTEES LIMITED | 00982701 | 30/08/1992 | 01/01/2001 | Not Trading |
| RIO TINTO PLC | 00719885 | 01/04/1995 | 01/01/2001 | Gold |
| UOP PRODUCTS UK LIMITED | 00502623 | 28/02/1993 | 31/03/1993 | One Red Flag |
| VECTOR BUILDING PRODUCTS LIMITED | 00758609 | 28/02/1993 | 31/03/1993 | Gold |
| VECTOR ENGINEERING & AVIATION LIMITED | 00228520 | 28/02/1992 | 31/03/1993 | Dissolved |
| VECTOR ENGINEERING INDUSTRIES LIMITED | 00210429 | 28/02/1993 | 31/03/1993 | Dissolved |
| VECTOR ENGINEERING PRODUCTS LIMITED | 00994043 | 28/02/1993 | 01/04/1993 | Not Trading |