| Symbol | Name | Country | Exchange |
|---|---|---|---|
| CNE | Cairn Energy Plc | UK | LSE |
| DELT | Deltic Energy Plc | UK | LSE |
| ENQ | Enquest Plc | UK | LSE |
| HBR | Harbour Energy plc | UK | LSE |
| I3E | I3 Energy Plc | UK | LSE |
| IOG | Independent Oil & Gas Pl | UK | LSE |
| JOG | Jersey Oil and Gas Plc | UK | LSE |
| PMG | Parkmead Group [The] Plc | UK | LSE |
| RSE | Riverstone Energy Limite | UK | LSE |
| SQZ | Serica Energy Plc | UK | LSE |