| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ITHACA (NE) E&P LIMITED | 01483021 | 31/01/2024 | Gold |
| ITHACA (NE) UKCS LIMITED | 03386464 | 31/01/2024 | Amber |
| ITHACA EF LIMITED | 03772746 | 13/10/2022 | Silver |
| ITHACA UKCS LIMITED | 01019748 | 13/10/2022 | Silver |
| LIVERPOOL BAY LIMITED | 08555007 | 13/10/2022 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BACTON CCS LIMITED | 15143797 | 18/09/2023 | 04/09/2024 | Bronze |
| BURREN ENERGY (EGYPT) LIMITED | 04948245 | 13/10/2022 | 03/10/2024 | One Red Flag |
| BURREN ENERGY INDIA LIMITED | 05319270 | 13/10/2022 | 03/10/2024 | Gold |
| BURREN ENERGY PLC | 03492720 | 01/08/2020 | 03/10/2024 | Gold |
| ENI AUSTRALIA LIMITED | 01020949 | 27/01/2023 | 03/10/2024 | Amber |
| ENI CBM LIMITED | 07036327 | 06/10/2022 | 03/10/2024 | Gold |
| ENI CCUS HOLDING LIMITED | 14821773 | 24/04/2023 | 03/09/2024 | Gold |
| ENI COTE D'IVOIRE LIMITED | 02556415 | 13/10/2022 | 03/10/2024 | Amber |
| ENI ENERGY BONDCO LIMITED | 11294725 | 31/01/2024 | 07/06/2024 | Bronze |
| ENI ENERGY CAPITAL LIMITED | 11136061 | 31/01/2024 | 07/06/2024 | Bronze |
| ENI ENERGY FINANCE LIMITED | 11135991 | 31/01/2024 | 07/06/2024 | Bronze |
| ENI ENERGY GROUP HOLDINGS LIMITED | 10647966 | 31/01/2024 | 03/10/2024 | Silver |
| ENI ENERGY GROUP LIMITED | 10647707 | 31/01/2024 | 03/10/2024 | Silver |
| ENI ENERGY GROUP MIDCO LIMITED | 10684661 | 31/01/2024 | 03/10/2024 | Gold |
| ENI ENERGY HYDROGEN LIMITED | 14313550 | 31/01/2024 | 03/10/2024 | Strike Off |
| ENI HEWETT LIMITED | SC090159 | 13/10/2022 | 03/10/2024 | Silver |
| ENI HYDROCARBONS VENEZUELA LIMITED | 01452037 | 13/10/2022 | 03/10/2024 | Gold |
| ENI IN AMENAS LIMITED | SC135813 | 28/02/2023 | 03/10/2024 | Bronze |
| ENI INDIA LIMITED | 02735371 | 13/10/2022 | 03/10/2024 | Amber |
| ENI INDONESIA LIMITED | 02334535 | 06/10/2022 | 03/10/2024 | Not Trading |
| ENI INVESTMENTS PLC | 04126448 | 13/10/2022 | 03/10/2024 | Gold |
| ENI IS EXPLORATION LIMITED | 00972944 | 28/02/2023 | 03/10/2024 | One Red Flag |
| ENI JPDA 03-13 LIMITED | 02664257 | 27/01/2023 | 03/10/2024 | Silver |
| ENI KRUENG MANE LIMITED | 03562003 | 06/10/2022 | 03/10/2024 | Not Trading |
| ENI LASMO PLC | 01008965 | 13/10/2022 | 03/10/2024 | Gold |
| ENI LIVERPOOL BAY OPERATING COMPANY LIMITED | 01003825 | 13/10/2022 | 03/10/2024 | Not Trading |
| ENI LNS LIMITED | 00970280 | 13/10/2022 | 03/10/2024 | Not Trading |
| ENI MIDDLE EAST LIMITED | 03180997 | 13/10/2022 | 03/10/2024 | Amber |
| ENI OIL ALGERIA LIMITED | 02274210 | 13/10/2022 | 03/10/2024 | Silver |
| ENI TNS LIMITED | SC055200 | 13/10/2022 | 03/10/2024 | Not Trading |
| ENI UHL LIMITED | 00916179 | 13/10/2022 | 03/10/2024 | Silver |
| ENI UK HOLDING PLC | 06428648 | 13/10/2022 | 03/10/2024 | Silver |
| ENI UK LIMITED | 00862823 | 10/10/2022 | 03/10/2024 | Silver |
| ENI ULT LIMITED | 00301317 | 13/10/2022 | 03/10/2024 | Silver |
| ENI ULX LIMITED | 00936223 | 13/10/2022 | 03/10/2024 | Silver |
| ENI WEST TIMOR LIMITED | 06606325 | 06/10/2022 | 03/10/2024 | Not Trading |
| ENI YEMEN LIMITED | 05567365 | 13/10/2022 | 03/10/2024 | Gold |
| LIVERPOOL BAY CCS LIMITED | 13194018 | 13/10/2022 | 03/09/2024 | Silver |
| NORPIPE PETROLEUM UK LIMITED | 01118667 | 16/12/2022 | 10/10/2024 | Bronze |
| NORPIPE TERMINAL HOLDCO LIMITED | 11436690 | 16/12/2022 | 10/10/2024 | Bronze |
| NORSEA PIPELINE LIMITED | 01083848 | 16/12/2022 | 10/10/2024 | Silver |
| VIC CBM LIMITED | 07079191 | 13/10/2022 | 03/10/2024 | Amber |
| VIRGINIA INDONESIA CO. CBM LIMITED | 07079220 | 13/10/2022 | 03/10/2024 | Amber |