| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Austral Development Ltd | 00162363 | 13/09/2001 | Dissolved |
| CENTRAL REGISTRATION,LIMITED | 00282710 | 04/11/1999 | Dissolved |
| Exploration Ventures Limited | 00513532 | 24/07/2003 | Dissolved |
| Exven Ltd | 00977929 | 24/07/2003 | Dissolved |
| Globalrecord Services Ltd | 02823083 | 30/11/2004 | Dissolved |
| Indal Building Services Ltd | 00289308 | 30/11/2004 | Dissolved |
| Judgecash Services Ltd | 02925761 | 30/11/2004 | Dissolved |
| MILFORD HAVEN DOCK & RAILWAY COMPANY LIMITED | 02105695 | 22/05/1998 | Dissolved |
| Minven Minerals Ltd | 00987755 | 28/08/1999 | Dissolved |
| RIO TINTO CONSULTANTS LIMITED | 00988092 | 18/02/1998 | Dissolved |
| RIO TINTO CONSULTANTS LIMITED | 00988092 | 03/12/2004 | Dissolved |
| RIO TINTO ESCONDIDA INVESTMENTS LIMITED | 02272823 | 13/01/2000 | Dissolved |
| RIO TINTO INDONESIAN FINANCE LIMITED | 03075145 | 13/01/2000 | Dissolved |
| Rio Tinto Five Ltd | 00174808 | 15/10/1999 | Dissolved |
| Rio Tinto Indonesia Ltd | 03054162 | 13/01/2000 | Dissolved |
| Rio Tinto Indonesian Investments Ltd | 03064612 | 13/01/2000 | Dissolved |
| Rio Tinto Pension Property Trust Ltd | 01486987 | 30/11/2004 | Dissolved |
| Rio Tinto Russia Ltd | 02966514 | 30/11/2004 | Dissolved |
| Rio Tinto Two Ltd | 02369967 | 01/01/2000 | Dissolved |
| Riofinex Ltd | 00611745 | 30/11/2004 | Dissolved |
| Riofinex North Ltd | 00981839 | 18/02/1998 | Dissolved |
| Riofinex North Ltd | 00981839 | 19/10/2001 | Dissolved |
| Severn Gate Ltd | 02793211 | 30/11/2004 | Dissolved |
| THE RTZ COMPANY LIMITED | 00217371 | 30/11/2004 | Dissolved |
| TORITONI FOUR LIMITED | 01989750 | 30/11/2004 | Dissolved |
| Town Woodhouse Ltd | 00383187 | 30/11/2004 | Dissolved |
| Western Properties Ltd | 00261959 | 01/01/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BORAX CONSOLIDATED LIMITED | 00520502 | 30/09/1993 | 16/02/1998 | Dissolved |
| BORAX CONSOLIDATED LIMITED | 00520502 | 29/10/1993 | 16/02/1998 | Dissolved |
| BORAX EUROPE LIMITED | 00036374 | 29/09/1993 | 16/02/1998 | Bronze |
| BORAX EUROPE LIMITED | 00036374 | 14/02/1996 | 01/01/1998 | Bronze |
| BORAX HOLDINGS LIMITED | 01328429 | 30/09/1993 | 16/02/1998 | Dissolved |
| BORAX HOLDINGS LIMITED | 01328429 | 30/11/1993 | 16/02/1998 | Dissolved |
| BORAX INTERNATIONAL LIMITED | 00561467 | 07/05/1996 | 16/02/1998 | Dissolved |
| BORAX INTERNATIONAL LIMITED | 00561467 | 30/11/1993 | 16/02/1998 | Dissolved |
| BORAX LIMITED | 00179893 | 30/09/1993 | 16/02/1998 | Dissolved |
| BORAX RESEARCH LIMITED | 01311686 | 31/12/1996 | 16/02/1998 | Dissolved |
| BORAX RESEARCH LIMITED | 01311686 | 24/05/1995 | 16/02/1998 | Dissolved |
| IMERYS TALC UK HOLDING LIMITED | 01599006 | 18/02/1998 | 13/01/2000 | Silver |
| IMERYS TALC UK HOLDING LIMITED | 01599006 | 30/11/1993 | 22/12/1993 | Silver |
| RIO TINTO DIAMONDS LIMITED | 05266164 | 21/10/2004 | 29/03/2005 | Dissolved |
| RIO TINTO ENERGY LIMITED | 05699397 | 01/06/2006 | 30/11/2006 | Not Trading |
| RIO TINTO ESCONDIDA INVESTMENTS LIMITED | 02272823 | 18/02/1998 | 13/01/2000 | Dissolved |
| RIO TINTO INDIA LIMITED | 03074671 | 28/08/1999 | 08/11/1999 | Dissolved |
| RIO TINTO INDONESIAN FINANCE LIMITED | 03075145 | 18/02/1998 | 13/01/2000 | Dissolved |
| RIO TINTO INDONESIAN HOLDINGS LIMITED | 03074852 | 18/02/1998 | 13/01/2000 | Gold |
| RIO TINTO LIHIR HOLDINGS LIMITED | 03010975 | 18/02/1998 | 13/01/2000 | Dissolved |
| RIO TINTO MINERALS LIMITED | 01523652 | 10/11/1993 | 16/02/1998 | Dissolved |
| Rio Tinto Indonesia Ltd | 03054162 | 18/02/1998 | 13/01/2000 | Dissolved |
| Rio Tinto Indonesian Investments Ltd | 03064612 | 18/02/1998 | 13/01/2000 | Dissolved |
| THE PLANTATION (BLACKHEATH) LIMITED | 00675102 | 25/11/1991 | 18/12/1992 | Silver |
| TINTO INVESTMENTS EUROPE LIMITED | 01414986 | 18/02/1998 | 13/01/2000 | Dissolved |