| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| WGP ENERGY SERVICES LTD | 10999384 | 05/10/2017 | Dissolved |
| WGP FFN EXPLORATION LIMITED | 10999386 | 05/10/2017 | Dissolved |
| WGP SURVEY LTD | 11014871 | 16/10/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACECA LIMITED | 03672833 | 18/12/2012 | 01/11/2014 | Dissolved |
| MAGSEIS FF (UK) LTD | 11034551 | 26/10/2017 | 18/12/2018 | Bronze |
| TGS GEOPHYSICAL COMPANY (UK) LIMITED | 05731700 | 18/04/2011 | 15/12/2013 | Amber |
| TGS-NOPEC GEOPHYSICAL COMPANY (UK) LIMITED | 02896729 | 18/12/2012 | 31/12/2013 | Dissolved |
| WGP GROUP LTD | 10986726 | 06/10/2017 | 18/12/2018 | Silver |