| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EQUIPOISE SOLUTIONS LIMITED | 07371513 | 13/04/2015 | Silver |
| ERC ENERGY RESOURCE CONSULTANTS LIMITED | 02838429 | 22/07/1993 | One Red Flag |
| SEMJEN LIMITED | 04670671 | 19/02/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ERC EQUIPOISE LIMITED | 03587074 | 01/10/2010 | 25/09/2018 | Silver |
| ERCE LIMITED | 11316227 | 18/04/2018 | 01/03/2022 | Silver |
| GEOTRACE DATA INTEGRATION SERVICES LIMITED | 02912810 | 08/07/1994 | 11/09/1996 | Dissolved |
| PETROFAC FACILITIES MANAGEMENT GROUP LIMITED | SC109608 | 12/08/1999 | 01/07/2000 | Not Trading |
| PGS IKDAM LTD. | 04051818 | 26/10/2000 | 20/05/2002 | Dissolved |
| PGS PENSION TRUSTEE LIMITED | 02988036 | 23/01/1995 | 14/03/1997 | Gold |
| PGS RESERVOIR LIMITED | 03177228 | 04/04/1996 | 05/02/1997 | Dissolved |
| RBLC (NO.3) 1996 LIMITED | 01293878 | 24/04/1991 | 15/08/1994 | Dissolved |
| SIMON-TPS LTD | 02174362 | 18/04/1994 | 19/06/1995 | Dissolved |
| Triwolf Ltd | 02235195 | 08/04/1994 | 15/08/1994 | Dissolved |