| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BURREN ENERGY (SERVICES) LIMITED | 03060511 | 24/08/2012 | Dissolved |
| ENI PAPALANG LIMITED | 04530307 | 24/09/2014 | Dissolved |
| ENI POPODI LIMITED | 04530309 | 24/09/2014 | Dissolved |
| ENI SOUTH SALAWATI LIMITED | 08309219 | 24/09/2014 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BURREN ENERGY INDIA LIMITED | 05319270 | 24/09/2014 | 13/06/2017 | Gold |
| BURREN ENERGY PLC | 03492720 | 24/09/2014 | 13/06/2017 | Gold |
| ENI AMBALAT LIMITED | 03968980 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI ARGUNI I LIMITED | 07683960 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI AUSTRALIA LIMITED | 01020949 | 24/09/2014 | 13/06/2017 | Amber |
| ENI BTC LIMITED | 01044120 | 29/03/2017 | 13/06/2017 | Amber |
| ENI BUKAT LIMITED | 03856870 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI CBM LIMITED | 07036327 | 24/09/2014 | 13/06/2017 | Gold |
| ENI EAST SEPINGGAN LIMITED | 08102459 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI ELGIN/FRANKLIN LIMITED | 03772746 | 24/09/2014 | 13/06/2017 | Silver |
| ENI ENGINEERING E&P LIMITED | 08324293 | 03/02/2015 | 13/06/2017 | Dissolved |
| ENI GANAL LIMITED | 03771954 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI HEWETT LIMITED | SC090159 | 24/09/2014 | 13/06/2017 | Silver |
| ENI INDIA LIMITED | 02735371 | 24/09/2014 | 13/06/2017 | Amber |
| ENI INDONESIA LIMITED | 02334535 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI INTERNATIONAL RESOURCES LIMITED | 04339898 | 14/03/2016 | 27/06/2017 | Bronze |
| ENI INVESTMENTS PLC | 04126448 | 06/10/2014 | 27/06/2017 | Gold |
| ENI JPDA 03-13 LIMITED | 02664257 | 24/09/2014 | 13/06/2017 | Silver |
| ENI KRUENG MANE LIMITED | 03562003 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI LASMO PLC | 01008965 | 24/09/2014 | 13/06/2017 | Gold |
| ENI LIVERPOOL BAY OPERATING COMPANY LIMITED | 01003825 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI LNS LIMITED | 00970280 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI NORTH GANAL LIMITED | 07814541 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI OIL ALGERIA LIMITED | 02274210 | 24/09/2014 | 13/06/2017 | Gold |
| ENI RAPAK LIMITED | 03771987 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI TNS LIMITED | SC055200 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI UHL LIMITED | 00916179 | 24/09/2014 | 13/06/2017 | Silver |
| ENI UK HOLDING PLC | 06428648 | 24/09/2014 | 13/06/2017 | Silver |
| ENI UK LIMITED | 00862823 | 24/09/2014 | 13/06/2017 | Silver |
| ENI UKCS LIMITED | 01019748 | 24/09/2014 | 13/06/2017 | Gold |
| ENI ULT LIMITED | 00301317 | 24/09/2014 | 13/06/2017 | Silver |
| ENI ULX LIMITED | 00936223 | 24/09/2014 | 13/06/2017 | Silver |
| ENI WEST TIMOR LIMITED | 06606325 | 24/09/2014 | 13/06/2017 | Not Trading |
| ENI YEMEN LIMITED | 05567365 | 24/09/2014 | 13/06/2017 | Gold |
| LIVERPOOL BAY LIMITED | 08555007 | 24/09/2014 | 13/06/2017 | Dissolved |
| PRIME AEP LIMITED | 00307812 | 24/09/2014 | 13/06/2017 | Gold |
| PRIME PAKISTAN LIMITED | 00151940 | 24/09/2014 | 13/06/2017 | Silver |
| VIC CBM LIMITED | 07079191 | 30/09/2014 | 14/06/2017 | Amber |
| VIRGINIA INDONESIA CO. CBM LIMITED | 07079220 | 30/09/2014 | 14/06/2017 | Amber |