| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ENI ENGINEERING E&P LIMITED | 08324293 | 12/06/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BURREN ENERGY (EGYPT) LIMITED | 04948245 | 12/06/2017 | 18/11/2019 | One Red Flag |
| BURREN ENERGY INDIA LIMITED | 05319270 | 12/06/2017 | 18/11/2019 | Gold |
| BURREN ENERGY PLC | 03492720 | 12/06/2017 | 18/11/2019 | Gold |
| ENI AUSTRALIA LIMITED | 01020949 | 12/06/2017 | 18/11/2019 | Amber |
| ENI CBM LIMITED | 07036327 | 12/06/2017 | 18/11/2019 | Silver |
| ENI COTE D'IVOIRE LIMITED | 02556415 | 12/06/2017 | 18/11/2019 | Amber |
| ENI ELGIN/FRANKLIN LIMITED | 03772746 | 12/06/2017 | 18/11/2019 | Silver |
| ENI HEWETT LIMITED | SC090159 | 12/06/2017 | 18/11/2019 | Silver |
| ENI HYDROCARBONS VENEZUELA LIMITED | 01452037 | 12/06/2017 | 18/11/2019 | Gold |
| ENI INDIA LIMITED | 02735371 | 12/06/2017 | 18/11/2019 | Amber |
| ENI INDONESIA LIMITED | 02334535 | 12/06/2017 | 18/11/2019 | Not Trading |
| ENI INVESTMENTS PLC | 04126448 | 27/06/2017 | 18/11/2019 | Gold |
| ENI JPDA 03-13 LIMITED | 02664257 | 12/06/2017 | 18/11/2019 | Silver |
| ENI KRUENG MANE LIMITED | 03562003 | 12/06/2017 | 18/11/2019 | Not Trading |
| ENI LASMO PLC | 01008965 | 12/06/2017 | 18/11/2019 | Gold |
| ENI LIVERPOOL BAY OPERATING COMPANY LIMITED | 01003825 | 12/06/2017 | 18/11/2019 | Not Trading |
| ENI LNS LIMITED | 00970280 | 12/06/2017 | 18/11/2019 | Not Trading |
| ENI MIDDLE EAST LIMITED | 03180997 | 12/06/2017 | 18/11/2019 | Amber |
| ENI OIL ALGERIA LIMITED | 02274210 | 12/06/2017 | 18/11/2019 | Gold |
| ENI TNS LIMITED | SC055200 | 12/06/2017 | 18/11/2019 | Not Trading |
| ENI UHL LIMITED | 00916179 | 12/06/2017 | 18/11/2019 | Silver |
| ENI UK HOLDING PLC | 06428648 | 12/06/2017 | 18/11/2019 | Silver |
| ENI UK LIMITED | 00862823 | 31/05/2017 | 18/11/2019 | Silver |
| ENI UKCS LIMITED | 01019748 | 12/06/2017 | 18/11/2019 | Gold |
| ENI ULT LIMITED | 00301317 | 12/06/2017 | 18/11/2019 | Silver |
| ENI ULX LIMITED | 00936223 | 12/06/2017 | 18/11/2019 | Silver |
| ENI WEST TIMOR LIMITED | 06606325 | 12/06/2017 | 18/11/2019 | Not Trading |
| ENI YEMEN LIMITED | 05567365 | 12/06/2017 | 18/11/2019 | Gold |
| LIVERPOOL BAY LIMITED | 08555007 | 12/06/2017 | 18/11/2019 | Dissolved |
| PRIME AEP LIMITED | 00307812 | 12/06/2017 | 18/11/2019 | Gold |
| PRIME PAKISTAN LIMITED | 00151940 | 12/06/2017 | 18/11/2019 | Silver |
| THE ITALIAN CHAMBER OF COMMERCE AND INDUSTRY FOR THE UNITED KINGDOM | 00598572 | 23/08/2017 | 26/03/2020 | Gold |
| VIC CBM LIMITED | 07079191 | 14/06/2017 | 18/11/2019 | Amber |
| VIRGINIA INDONESIA CO. CBM LIMITED | 07079220 | 14/06/2017 | 18/11/2019 | One Red Flag |