| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Forward Pension Securities Limited | 00460783 | 02/08/1991 | Dissolved |
| Stablex International Holdings Ltd | 01354257 | 30/05/1992 | Dissolved |
| Tunnel Estate Ltd | 01188503 | 10/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Australasian Holdings Ltd | 00856263 | 15/08/1992 | 30/09/1993 | Dissolved |
| Aveley Reclamation Ltd | 01272816 | 02/07/1991 | 30/09/1993 | Dissolved |
| Lothian Leasing & Drilling Ltd | SC050626 | 21/03/1989 | 30/09/1993 | Dissolved |
| Overseas Minerals Ltd | 00638196 | 12/03/1993 | 30/09/1993 | Dissolved |
| Platt Energy Ltd | 00944096 | 12/06/1992 | 30/09/1993 | Dissolved |
| R T Z Britain Ltd | 00108854 | 12/06/1992 | 30/09/1993 | Dissolved |
| R T Z Pensions Administration Ltd | 01686232 | 01/03/1993 | 30/09/1993 | Dissolved |
| RIO TINTO AUSTRALIAN HOLDINGS LIMITED | 00464176 | 07/06/1992 | 30/09/1993 | Gold |
| RIO TINTO ESCONDIDA INVESTMENTS LIMITED | 02272823 | 20/04/1992 | 30/09/1993 | Dissolved |
| RIO TINTO ESTATES LIMITED | 00117615 | 22/05/1991 | 30/09/1993 | Dissolved |
| RIO TINTO EUROPEAN HOLDINGS LIMITED | 00993068 | 05/06/1992 | 30/09/1993 | Bronze |
| RIO TINTO FH LIMITED | 00339168 | 07/06/1992 | 30/09/1993 | Dissolved |
| RIO TINTO FINANCE & EXPLORATION PLC | 00541213 | 06/06/1992 | 30/09/1993 | Dissolved |
| RIO TINTO FINANCE PLC | 00358901 | 28/05/1992 | 30/09/1993 | Silver |
| RIO TINTO INTERNATIONAL HOLDINGS LIMITED | 00425864 | 04/06/1992 | 30/09/1993 | Gold |
| RIO TINTO LONDON LIMITED | 00460473 | 27/03/1992 | 30/09/1993 | Silver |
| RIO TINTO OVERSEAS HOLDINGS LIMITED | 00280423 | 05/06/1992 | 30/09/1993 | Silver |
| RIO TINTO PACIFIC HOLDINGS LIMITED | 00245487 | 12/06/1992 | 30/09/1993 | Dissolved |
| RIO TINTO WESTERN HOLDINGS LIMITED | 00007132 | 28/03/1992 | 30/09/1993 | Gold |
| Rallip Australia Ltd | 00711388 | 07/06/1992 | 30/09/1993 | Dissolved |
| Rio Tinto Cement Ltd | 01294491 | 04/06/1992 | 20/09/1993 | Dissolved |
| Rio Tinto Development Enterprises Ltd | 00988971 | 06/06/1992 | 30/09/1993 | Dissolved |
| Riofinex Holdings Ltd | 01181026 | 04/06/1992 | 30/09/1993 | Dissolved |
| South American Holdings Ltd | 02257584 | 17/12/1992 | 30/09/1993 | Dissolved |
| South Pacific Holdings Ltd | 01415158 | 02/03/1993 | 30/09/1993 | Dissolved |
| THOS W WARD LIMITED | 00081020 | 11/04/1992 | 30/09/1993 | Gold |
| TINTO INVESTMENTS EUROPE LIMITED | 01414986 | 25/05/1993 | 30/09/1993 | Dissolved |
| VECTOR ENGINEERING PRODUCTS LIMITED | 00994043 | 28/02/1993 | 20/10/1993 | Not Trading |
| Western Properties Ltd | 00261959 | 22/05/1991 | 30/09/1993 | Dissolved |