| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BURREN ENERGY PLC | 03492720 | 08/12/2020 | Gold |
| ENI AMBALAT LIMITED | 03968980 | 08/12/2020 | Not Trading |
| ENI ARGUNI I LIMITED | 07683960 | 08/12/2020 | Not Trading |
| ENI AUSTRALIA LIMITED | 01020949 | 08/12/2020 | Amber |
| ENI BTC LIMITED | 01044120 | 08/12/2020 | Amber |
| ENI BUKAT LIMITED | 03856870 | 08/12/2020 | Not Trading |
| ENI COTE D'IVOIRE LIMITED | 02556415 | 08/12/2020 | Amber |
| ENI EAST GANAL LIMITED | 11409270 | 08/12/2020 | Not Trading |
| ENI EAST SEPINGGAN LIMITED | 08102459 | 08/12/2020 | Not Trading |
| ENI GANAL LIMITED | 03771954 | 08/12/2020 | Not Trading |
| ENI HEWETT LIMITED | SC090159 | 08/12/2020 | Silver |
| ENI HYDROCARBONS VENEZUELA LIMITED | 01452037 | 08/12/2020 | Gold |
| ENI INTERNATIONAL RESOURCES LIMITED | 04339898 | 17/12/2020 | Bronze |
| ENI INVESTMENTS PLC | 04126448 | 08/12/2020 | Gold |
| ENI LNS LIMITED | 00970280 | 08/12/2020 | Not Trading |
| ENI MIDDLE EAST LIMITED | 03180997 | 08/12/2020 | Amber |
| ENI MOZAMBIQUE ENGINEERING LIMITED | 09104675 | 08/12/2020 | Dissolved |
| ENI NORTH GANAL LIMITED | 07814541 | 08/12/2020 | Not Trading |
| ENI OIL ALGERIA LIMITED | 02274210 | 08/12/2020 | Gold |
| ENI PERI MAHAKAM LIMITED | 14801801 | 14/04/2023 | Not Trading |
| ENI RAPAK LIMITED | 03771987 | 08/12/2020 | Not Trading |
| ENI TNS LIMITED | SC055200 | 08/12/2020 | Not Trading |
| ENI UK HOLDING PLC | 06428648 | 08/12/2020 | Silver |
| ENI UK LIMITED | 00862823 | 10/10/2022 | Silver |
| ENI WEST GANAL LIMITED | 12227735 | 08/12/2020 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENI ELGIN/FRANKLIN LIMITED | 03772746 | 08/12/2020 | 03/10/2024 | Silver |
| ENI ENERGY E&P UK LIMITED | 01483021 | 31/01/2024 | 07/06/2024 | Gold |
| ENI ENERGY E&P UKCS LIMITED | 03386464 | 31/01/2024 | 07/06/2024 | Amber |
| ENI ENERGY GROUP MIDCO LIMITED | 10684661 | 31/01/2024 | 07/06/2024 | Gold |
| ENI ENERGY GROUP RESOURCING LIMITED | 12756906 | 31/01/2024 | 01/05/2024 | Amber |
| ENI ENERGY HYDROGEN LIMITED | 14313550 | 31/01/2024 | 07/06/2024 | Not Trading |
| ENI UKCS LIMITED | 01019748 | 08/12/2020 | 03/10/2024 | Gold |
| PRIME AEP LIMITED | 00307812 | 08/12/2020 | 29/12/2022 | Gold |
| PRIME PAKISTAN LIMITED | 00151940 | 08/12/2020 | 29/12/2022 | Silver |