| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Agip Trading Services Ltd | 03005842 | 29/06/2006 | Dissolved |
| E N I Liverpool Bay Ltd | 02566262 | 29/06/2006 | Dissolved |
| ENI ANS LIMITED | 02554093 | 25/05/2006 | Dissolved |
| ENI BB LIMITED | 00261640 | 06/07/2007 | Dissolved |
| ENI PAPALANG LIMITED | 04530307 | 29/06/2006 | Dissolved |
| ENI POPODI LIMITED | 04530309 | 29/06/2006 | Dissolved |
| ENI TTO LIMITED | 00196665 | 29/06/2006 | Dissolved |
| Eni Securities Ltd | 02351633 | 29/06/2006 | Dissolved |
| Lasmo Grand Maghreb Ltd | 02466698 | 29/06/2006 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENI AMBALAT LIMITED | 03968980 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI AUSTRALIA LIMITED | 01020949 | 06/07/2007 | 09/11/2017 | Amber |
| ENI BTC LIMITED | 01044120 | 29/06/2006 | 09/11/2017 | Amber |
| ENI BUKAT LIMITED | 03856870 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI COTE D'IVOIRE LIMITED | 02556415 | 06/07/2007 | 09/11/2017 | Amber |
| ENI GANAL LIMITED | 03771954 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI HYDROCARBONS VENEZUELA LIMITED | 01452037 | 06/07/2007 | 09/11/2017 | Gold |
| ENI INDIA LIMITED | 02735371 | 19/05/2005 | 09/11/2017 | Amber |
| ENI INDONESIA LIMITED | 02334535 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI INTERNATIONAL RESOURCES LIMITED | 04339898 | 06/07/2007 | 09/11/2017 | Bronze |
| ENI INVESTMENTS PLC | 04126448 | 29/06/2006 | 09/11/2017 | Gold |
| ENI JPDA 03-13 LIMITED | 02664257 | 06/07/2007 | 09/11/2017 | Silver |
| ENI KRUENG MANE LIMITED | 03562003 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI LASMO PLC | 01008965 | 29/06/2006 | 09/11/2017 | Gold |
| ENI LIVERPOOL BAY OPERATING COMPANY LIMITED | 01003825 | 06/07/2007 | 09/11/2017 | Not Trading |
| ENI LNS LIMITED | 00970280 | 06/07/2007 | 09/11/2017 | Not Trading |
| ENI MIDDLE EAST LIMITED | 03180997 | 29/06/2006 | 09/11/2017 | Amber |
| ENI OIL ALGERIA LIMITED | 02274210 | 29/06/2006 | 09/11/2017 | Silver |
| ENI RAPAK LIMITED | 03771987 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI TNS LIMITED | SC055200 | 29/06/2006 | 09/11/2017 | Not Trading |
| ENI UHL LIMITED | 00916179 | 29/06/2006 | 09/11/2017 | Silver |
| ENI ULT LIMITED | 00301317 | 29/06/2006 | 09/11/2017 | Silver |
| ENI ULX LIMITED | 00936223 | 06/07/2007 | 09/11/2017 | Silver |
| ITHACA EF LIMITED | 03772746 | 06/07/2007 | 09/11/2017 | Silver |
| ITHACA UKCS LIMITED | 01019748 | 06/07/2007 | 09/11/2017 | Silver |
| PRIME AEP LIMITED | 00307812 | 06/07/2007 | 09/11/2017 | Gold |
| PRIME PAKISTAN LIMITED | 00151940 | 29/06/2006 | 09/11/2017 | Silver |