| AKER BP UK LIMITED | 12908310 |
| ALKANE ENERGY UK LIMITED | 03128509 |
| ALTA QUEST ENERGY CORPORATION (UK) LIMITED | 02171441 |
| ALTWOOD PETROLEUM LIMITED | 02728156 |
| ANASURIA HIBISCUS UK LIMITED | 09696268 |
| ANGUS ENERGY WEALD BASIN NO.3 LIMITED | SC055329 |
| APACHE BERYL I LIMITED | FC005975 |
| APACHE NORTH SEA LIMITED | 04614761 |
| ARCO BRITISH LIMITED, LLC | FC005677 |
| ATHENA EXPLORATION LIMITED | SC464374 |
| AURORA ENERGY RESOURCES LIMITED | SC335749 |
| BG GREAT BRITAIN LIMITED | 00909162 |
| BG INTERNATIONAL LIMITED | 00902239 |
| BLACKLAND PARK EXPLORATION LIMITED | 01881647 |
| BOWLAND RESOURCES (NO.2) LIMITED | 06576443 |
| BOWLAND RESOURCES LIMITED | 06811566 |
| BP EXPLORATION (ALPHA) LIMITED | 01021007 |
| BP EXPLORATION OPERATING COMPANY LIMITED | 00305943 |
| BRIDGE PETROLEUM 1 LIMITED | 10045796 |
| BRIDGE PETROLEUM 3 LIMITED | 10650893 |
| BRIDGE PETROLEUM 5 LIMITED | 10651049 |
| BRITOIL LIMITED | SC077750 |
| BROCKHAM CAPITAL LIMITED | 02196647 |
| CALDERA PETROLEUM (UK) LTD | 11598555 |
| CALENERGY GAS LIMITED | 04370508 |
| CALENERGY NORTH SEA LIMITED | 07632999 |
| CALENERGY RESOURCES (UK) LIMITED | 11999607 |
| CALENERGY SNS LIMITED | 08619688 |
| CENTRICA OFFSHORE UK LIMITED | 04248952 |
| CHEVRON BRITAIN LIMITED | 01006065 |
| CHRYSAOR (U.K.) SIGMA LIMITED | 07832693 |
| CHRYSAOR (U.K.) THETA LIMITED | 01491002 |
| CHRYSAOR DEVELOPMENTS LIMITED | 02180666 |
| CHRYSAOR LIMITED | 06418649 |
| CHRYSAOR NORTH SEA LIMITED | 00958880 |
| CHRYSAOR PETROLEUM COMPANY U.K. LIMITED | 00792712 |
| CHRYSAOR PETROLEUM LIMITED | 01247477 |
| CHRYSAOR PRODUCTION (U.K.) LIMITED | 00524868 |
| CHRYSAOR RESOURCES (IRISH SEA) LIMITED | 03440053 |
| CNOOC PETROLEUM EUROPE LIMITED | 01051137 |
| CNOOC PETROLEUM FARRAGON U.K. LIMITED | 05645503 |
| CNR INTERNATIONAL (U.K.) DEVELOPMENTS LIMITED | 01021629 |
| CNR INTERNATIONAL (U.K.) LIMITED | 00813187 |
| COMTRACK (UK) LIMITED | 09411128 |
| CONOCOPHILLIPS (U.K.) HOLDINGS LIMITED | 11712725 |
| COURAGE ENERGY (U.K.) LIMITED | 03446506 |
| CUADRILLA BALCOMBE LIMITED | 06811588 |
| CUADRILLA BOWLAND LIMITED | 08340918 |
| CUADRILLA ELSWICK (NO.2) LIMITED | 07153115 |
| CUADRILLA ELSWICK LIMITED | 06956498 |
| CUADRILLA NORTH CLEVELAND LIMITED | 10315761 |
| DANA PETROLEUM (BVUK) LIMITED | 03337437 |
| DANA PETROLEUM (E&P) LIMITED | 02294746 |
| DART ENERGY (WEST ENGLAND) LIMITED | 06760557 |
| DCARBONX LTD | 12649411 |
| DELTIC ENERGY PLC | 07958581 |
| DESS ENERGY LIMITED | 07818432 |
| DNO EXPLORATION UK LIMITED | SC487108 |
| DNO NORTH SEA (ROGB) LIMITED | 01852301 |
| DNO NORTH SEA (U.K.) LIMITED | 04848017 |
| E. F. OIL AND GAS LIMITED | 03430228 |
| EGDON RESOURCES (AURORA) LIMITED | SC301743 |
| EGDON RESOURCES U.K. LIMITED | 03424561 |
| ELSWICK POWER LIMITED | 08542050 |
| ENERGEAN UK LTD | 06683599 |
| ENI UK LIMITED | 00862823 |
| ENQUEST HEATHER LIMITED | 02748866 |
| ENQUEST PROGRESS LIMITED | 04560068 |
| ENTERPRISE OIL LIMITED | 01682048 |
| ENTERPRISE OIL MIDDLE EAST LIMITED | 02650009 |
| EQUINOR SPV LIMITED | 16172712 |
| EQUINOR UK LIMITED | 01285743 |
| EQUINOR WOS LIMITED | 00972618 |
| ESSO EXPLORATION AND PRODUCTION UK LIMITED | 00207426 |
| EUROPA OIL & GAS LIMITED | 03093716 |
| EVERARD ENERGY LIMITED | 08066733 |
| EXXONMOBIL SNS LIMITED | 15830434 |
| FINDER ENERGY UK LIMITED | 12227103 |
| GAZPROM INTERNATIONAL UK LTD. | 07877636 |
| HARTSHEAD RESOURCES LTD | 11971748 |
| HARVESTER ENERGY (UK) LIMITED | SC745826 |
| HARWORTH POWER (GENERATION) LIMITED | 07896679 |
| HIS GRACE THE DUKE OF DEVONSHIRE | |
| HORIZON ENERGY ACQUISITION LIMITED | 11825473 |
| HORIZON ENERGY PARTNERS LIMITED | 09245321 |
| HORSE HILL DEVELOPMENTS LTD | 08808553 |
| HUMBLY GROVE ENERGY LIMITED | 04689011 |
| HUTTON ENERGY UK LIMITED | 06399734 |
| IGAS ENERGY ENTERPRISE LIMITED | 05457589 |
| IGAS ENERGY PRODUCTION LIMITED | SC298739 |
| INEOS CLIPPER SOUTH C LIMITED | 04967270 |
| INEOS E&P (UK) LIMITED | 04376184 |
| INEOS FPS LIMITED | 10660338 |
| INEOS UPSTREAM LIMITED | 09121775 |
| IRANIAN OIL COMPANY (U.K.) LIMITED | 01019769 |
| ISLAND GAS LIMITED | 04962079 |
| ITHACA (NE) E&P LIMITED | 01483021 |
| ITHACA EF LIMITED | 03772746 |
| ITHACA ENERGY (UK) LIMITED | SC272009 |
| ITHACA EPSILON LIMITED | 05979869 |
| ITHACA GAMMA LIMITED | 05929104 |
| ITHACA GSA LIMITED | FC033620 |
| ITHACA J E&P LIMITED | 08946587 |
| ITHACA MA LIMITED | 03947050 |
| ITHACA OIL AND GAS LIMITED | 01546623 |
| ITHACA SP E&P LIMITED | 01504603 |
| ITHACA SP O&G LIMITED | 09858988 |
| ITHACA UKCS LIMITED | 01019748 |
| ITHACA ZETA LIMITED | 08860426 |
| JERSEY PETROLEUM LTD | 06490608 |
| JERSEY V&C LTD | 10853027 |
| KISTOS ENERGY LIMITED | 12859749 |
| LUCAS BOLNEY LIMITED | 08355125 |
| LUCAS BOWLAND (NO.2) LIMITED | 08347365 |
| LUCAS BOWLAND (UK) LIMITED | 08341601 |
| MCX DUNLIN (UK) LIMITED | 06451712 |
| MCX OSPREY (UK) LIMITED | 06451720 |
| MONTROSE INDUSTRIES LIMITED | 00654944 |
| NEO ENERGY (PRODUCTION) LIMITED | 05896824 |
| NEO ENERGY (ZEX) LIMITED | 05834920 |
| NEO ENERGY ALPHA LIMITED | 04796268 |
| NEO ENERGY BETA LIMITED | 04796282 |
| NEO ENERGY CENTRAL NORTH SEA LIMITED | 05894683 |
| NEO ENERGY DELTA LIMITED | 11021922 |
| NEO ENERGY EXPLORATION UK LIMITED | 08266502 |
| NEO ENERGY GT LIMITED | 09187479 |
| NEO ENERGY LNS LIMITED | 02483161 |
| NEO ENERGY NATURAL RESOURCES LIMITED | 13018823 |
| NEO ENERGY NORTH SEA LIMITED | 01061863 |
| NEO ENERGY OIL TRADING LIMITED | 02307374 |
| NEO ENERGY PETROLEUM LIMITED | 03288689 |
| NEO ENERGY PRODUCTION UK LIMITED | 12086835 |
| NEO ENERGY RESOURCES UK LIMITED | 00825828 |
| NOBEL OIL E&P NORTH SEA LIMITED | 09856429 |
| NOBLE ENERGY (OILEX) LIMITED | 00797339 |
| NORTH SEA NATURAL RESOURCES LTD | 07316877 |
| ONE-DYAS E&P LIMITED | 04024945 |
| ONE-DYAS UK LIMITED | 03531783 |
| ONEGAS WEST LIMITED | 15846552 |
| ONSHORE PRODUCTION SERVICES LIMITED | 04252529 |
| ORCADIAN ENERGY (CNS) LTD | 08954960 |
| PAINTED WOLF RESOURCES LIMITED | 08684544 |
| PERENCO GAS (UK) LIMITED | 00715529 |
| PERENCO NORTH SEA LIMITED | SC293676 |
| PERENCO UK LIMITED | 04653066 |
| PETRICHOR ENERGY UK LIMITED | 09275618 |
| PETROGAS NORTH SEA LIMITED | 05470844 |
| PING PETROLEUM UK PLC | 09698077 |
| PRAX HURRICANE (WHIRLWIND) LIMITED | 10654845 |
| PRAX HURRICANE GLA LIMITED | 10656211 |
| PRAX HURRICANE GWA LIMITED | 10656130 |
| PREMIER OIL E&P UK EU LIMITED | 02907493 |
| PREMIER OIL E&P UK LIMITED | 02761032 |
| PREMIER OIL UK LIMITED | SC048705 |
| RAPID OIL PRODUCTION LTD | 09620240 |
| RATHLIN ENERGY (UK) LIMITED | 06478035 |
| REABOLD RESOURCES PLC | 03542727 |
| REABOLD SOUTHERN NORTH SEA LIMITED | 07905535 |
| REGENT PARK ENERGY LIMITED | 04557422 |
| RIGEL PETROLEUM (NI) LIMITED | NI029801 |
| RIGEL PETROLEUM UK LIMITED | 03389978 |
| RIGON EXPLORATION LIMITED | 11931578 |
| RIGON OPERATIONS LIMITED | 13099494 |
| ROCKROSE (UKCS2) LIMITED | 08724360 |
| ROCKROSE (UKCS3) LIMITED | 04620801 |
| ROCKROSE UKCS 10 LIMITED | 04105025 |
| ROCKROSE UKCS4 LIMITED | 02552901 |
| SALTFLEETBY ENERGY LIMITED | 00953066 |
| SCOTTISHPOWER ENERGY MANAGEMENT LIMITED | SC215843 |
| SERICA ENERGY (UK) LIMITED | 04073712 |
| SERICA ENERGY CHINOOK LIMITED | SC335305 |
| SERICA ENERGY MISTRAL LIMITED | 04458621 |
| SERICA ENERGY NORTE LIMITED | SC397002 |
| SEVEN STAR NATURAL GAS LIMITED | 05330862 |
| SHELL CLAIR UK LIMITED | 07108515 |
| SHELL EP OFFSHORE VENTURES LIMITED | 01682052 |
| SHELL U.K. LIMITED | 00140141 |
| SHELL U.K. NORTH ATLANTIC LIMITED | 04801731 |
| SHELL UPSTREAM OVERSEAS SERVICES (I) LIMITED | 07657243 |
| SOJITZ ENERGY DEVELOPMENT LIMITED | 10596616 |
| SOLITON RESOURCES LIMITED | 11011152 |
| SOUTH WESTERN ENERGY LIMITED | 08019159 |
| SPIRIT ENERGY NORTH SEA LIMITED | 04594558 |
| SPIRIT ENERGY NORTH SEA OIL LIMITED | SC210361 |
| SPIRIT ENERGY PRODUCTION UK LIMITED | 03115179 |
| SPIRIT ENERGY RESOURCES LIMITED | 02855151 |
| SPIRIT ENERGY SOUTHERN NORTH SEA LIMITED | 05735294 |
| SPIRIT NORTH SEA GAS LIMITED | SC182822 |
| STELINMATVIC INDUSTRIES LTD | 05123578 |
| TAQA BRATANI LIMITED | 05975475 |
| TAQA BRATANI LNS LIMITED | 06230540 |
| TERRAIN ENERGY LIMITED | 07004014 |
| TETRA ENERGY UK ONSHORE LTD | 06030678 |
| TOTALENERGIES E&P INTERNATIONAL K1 LIMITED | 09849276 |
| TOTALENERGIES E&P INTERNATIONAL K2 LIMITED | 09849396 |
| TOTALENERGIES E&P INTERNATIONAL K3 LIMITED | 09849354 |
| TOTALENERGIES E&P NORTH SEA UK LIMITED | 03682299 |
| TOTALENERGIES E&P UK LIMITED | 00811900 |
| TOTALENERGIES OFFSHORE UK LIMITED | 00946986 |
| TRANSWORLD PETROLEUM (U.K.) LIMITED | 01010787 |
| TRIANGLE ENERGY (UK) PTY LTD | 14725345 |
| TULLOW OIL SK LIMITED | 05287330 |
| UK NORTH SEA LIMITED | 16203210 |
| UKOG (137/246) LTD | 06807023 |
| UKOG (GB) LIMITED | 04050227 |
| UNION JACK OIL PLC | 07497220 |
| UOG PL090 LIMITED | 10164996 |
| WALDORF CNS (I) LIMITED | SC278868 |
| WALDORF CNS (II) LIMITED | 04922555 |
| WALDORF OPERATIONS LIMITED | 09110642 |
| WALDORF PETROLEUM RESOURCES LIMITED | 03949599 |
| WALDORF PRODUCTION UK PLC | 05030838 |
| WINTERSHALL NOORDZEE B.V. | FC027567 |