| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| PGS EM LIMITED | SC243297 | 29/06/2007 | Dissolved |
| PGS IKDAM LTD. | 04051818 | 29/11/2006 | Dissolved |
| PGS RESERVOIR LIMITED | 03177228 | 23/03/2004 | Dissolved |
| PGS SEISMIC (UK) LTD | 05646810 | 06/12/2005 | Dissolved |
| SEISMIC EXPLORATION (CANADA) LTD | 03077211 | 23/03/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AZINOR CATALYST LIMITED | 04212557 | 23/03/2004 | 30/05/2013 | Insolvent |
| PANOCEANIC ENERGY LIMITED | 01851671 | 23/03/2004 | 27/08/2024 | Amber |
| PETROLEUM GEO-SERVICES (UK) LIMITED | 02874539 | 23/03/2004 | 27/08/2024 | Bronze |
| PGS EXPLORATION (UK) LIMITED | 02904391 | 23/03/2004 | 27/08/2024 | Gold |
| PGS GEOPHYSICAL (ANGOLA) LTD. | 01956990 | 07/05/2010 | 27/08/2024 | One Red Flag |
| PGS HOLDING I LTD | 12930687 | 05/10/2020 | 15/08/2024 | Gold |
| PGS HOLDING II LTD | 12932266 | 06/10/2020 | 15/08/2024 | Gold |
| PGS PENSION TRUSTEE LIMITED | 02988036 | 27/03/2006 | 26/08/2024 | Gold |