| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Schlumberger Oilfield Uk Plc | NF004024 | 11/01/2005 | Dissolved |
| Schlumberger Wcp Ltd | FC024690 | 21/04/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CAMCO DRILLING GROUP LIMITED | NI020719 | 10/07/1987 | 21/12/2002 | Dissolved |
| LASALLE ENGINEERING (HOLDINGS) LIMITED | SC130627 | 18/12/1996 | 19/12/2002 | Dissolved |
| LASALLE ENGINEERING LIMITED | SC096952 | 18/12/1996 | 06/01/2005 | Dissolved |
| NI004145 LIMITED | NI004145 | 06/10/1958 | 19/12/2002 | Dissolved |
| REDA INDUSTRIES LIMITED | 01866033 | 18/12/1996 | 17/12/2002 | Dissolved |
| REEDHYCALOG UK LTD | NI029047 | 24/01/2000 | 26/08/2003 | Not Trading |
| SCHLUMBERGER OILFIELD UK LIMITED | 04157867 | 11/01/2005 | 16/09/2013 | Bronze |
| SCHLUMBERGER TRUST COMPANY LIMITED | 02229322 | 24/06/2004 | 02/04/2018 | Not Trading |
| SCHLUMBERGER WCP LIMITED | NI044704 | 21/04/2004 | 06/01/2005 | Dissolved |