| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| GEOSOURCE U.K. LIMITED | 00650819 | 15/06/1994 | 12/08/1996 | Dissolved |
| Gearhart (United Kingdom) | SC074679 | 10/08/1994 | 12/08/1996 | Dissolved |
| Gearhart Geodata Holdings Ltd | SC096916 | 02/03/1995 | 12/08/1996 | Dissolved |
| Gearhart Wireline Holdings Ltd | SC097026 | 01/09/1994 | 12/08/1996 | Dissolved |
| HALLIBURTON GEODATA | 01141281 | 30/06/1994 | 12/08/1996 | Dissolved |
| HALLIBURTON LIMITED | 00978424 | 19/10/1993 | 01/06/1995 | Gold |
| HALLIBURTON MANUFACTURING AND SERVICES LIMITED | 00611451 | 16/09/1992 | 12/08/1996 | Silver |
| Halliburton Energy Services Ltd | 02104899 | 04/11/1994 | 12/08/1996 | Dissolved |
| Halliburton Logging Services (U K) Ltd | SC056358 | 28/10/1994 | 12/08/1996 | Dissolved |
| Hgs | 02075516 | 30/06/1994 | 12/08/1996 | Dissolved |
| Imco Services (U K) Ltd | 00432339 | 21/08/1992 | 12/08/1996 | Dissolved |
| KELLOGG BROWN & ROOT (U.K.) LIMITED | 02021947 | 18/11/1993 | 12/08/1996 | Amber |
| KELLOGG BROWN & ROOT HOLDINGS (U.K.) LIMITED | 01870934 | 01/07/1994 | 12/08/1996 | Bronze |
| TESEL HOLDINGS | 01383195 | 27/10/1992 | 01/05/1995 | Dissolved |
| Tristan Services Ltd | 00919541 | 21/10/1993 | 12/08/1996 | Dissolved |
| Vann Systems (U K) Ltd | SC074594 | 30/06/1994 | 12/08/1996 | Dissolved |