| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Iberian Base Metals Plc | 05075105 | 16/03/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANGLO ASIAN MINING PLC | 05227012 | 13/03/2006 | 17/07/2007 | Amber |
| BHP BILLITON INTERNATIONAL DEVELOPMENT LIMITED | 03212438 | 28/04/1998 | 30/11/2001 | Dissolved |
| Berkeley Mining Plc | 04495695 | 03/02/2003 | 18/06/2003 | Dissolved |
| GEMFIELDS BVI LIMITED | FC028776 | 14/01/2009 | 01/09/2017 | Bronze |
| GEMFIELDS LIMITED | 05129023 | 29/11/2004 | 28/07/2017 | Bronze |
| GRAM CALEDON RESOURCES LIMITED | 03993115 | 11/04/2003 | 23/04/2010 | Insolvent |
| INTERNATIONAL MOLYBDENUM LIMITED | 05263336 | 08/04/2005 | 06/06/2006 | Dissolved |
| LONDON MINING P.L.C. | 05424040 | 01/05/2010 | 21/03/2013 | Dissolved |
| LUBEL COAL COMPANY (UK) LIMITED | 06403480 | 18/10/2007 | 30/11/2009 | Dissolved |
| MARULA MINING PLC | 04228788 | 11/12/2020 | 11/10/2021 | Two Red Flags |
| Morgan Grenfell International Ltd | 00958765 | 01/08/1995 | 30/06/1997 | Dissolved |
| NCONDEZI SERVICES (UK) LIMITED | 07075785 | 13/11/2009 | 01/06/2012 | Dissolved |
| Outokumpu Metals & Resources International Ltd | 02260071 | 23/10/1991 | 10/03/1994 | Dissolved |
| Placer Outokumpu Exploration Ltd | 02657505 | 25/10/1992 | 13/06/1995 | Dissolved |
| Uramin U K Ltd | 05354240 | 07/02/2005 | 26/01/2007 | Dissolved |