| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Scott Pickford Seismic Technology Ltd | 02235962 | 22/10/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CORE LABORATORIES (U.K.) LIMITED | 02924532 | 12/04/1995 | 29/06/2000 | Bronze |
| CORETON LIMITED | 01302137 | 14/03/1997 | 29/06/2000 | Not Trading |
| Coherence Technology (U K) Ltd | SC169403 | 20/01/2000 | 30/07/2000 | Dissolved |
| Gaps Geological Consultants Ltd | 01676595 | 22/10/1997 | 29/06/2000 | Dissolved |
| LABTON LIMITED | 02502923 | 22/10/1997 | 29/06/2000 | Not Trading |
| OWEN OIL TOOLS (U.K.) LIMITED | 03691954 | 30/04/1999 | 29/06/2000 | Amber |
| Samuel Denison Ltd | 02340476 | 31/10/1997 | 19/08/1998 | Dissolved |
| Stim Lab Coresystems Ltd | SC168618 | 30/07/1998 | 29/06/2000 | Dissolved |
| Stim-Lab (U K) Ltd | SC137952 | 30/07/1998 | 29/06/2000 | Dissolved |
| W.H. Mayes & Son (U.K.) Ltd | 02869550 | 31/10/1997 | 19/08/1998 | Dissolved |