Company Name Company Registration Number ACE ENERGY DEVELOPMENT LIMITED 04881770 ACORN NORTH SEA LIMITED 04257334 ADAMS RESOURCES UK LIMITED 05132241 AGORA OIL AND GAS (UK) LIMITED SC366018 ALPHA PETROLEUM RESOURCES LIMITED 03949599 AMOCO (FIDDICH) LIMITED 01005360 AMOCO (U.K.) EXPLORATION COMPANY, LLC SF000790; BR005086 AMOCO U.K. PETROLEUM LIMITED 00799710 ANASURIA HIBISCUS UK LIMITED 09696268 ANASURIA OPERATING COMPANY LIMITED 09698591 ANTRIM ENERGY (UK) LIMITED 08882093 ANTRIM ENERGY (VENTURES) LIMITED 08882092 APACHE BERYL I LIMITED FC005975; BR001327 APACHE NORTH SEA LIMITED 04614761 ARCO BRITISH LIMITED, LLC FC005677; BR001713 ATLANTIC PETROLEUM NORTH SEA LIMITED 06459546 ATLANTIC PETROLEUM UK LIMITED 04395761 ATLANTIC RICHFIELD OIL & GAS (ST JAMES) LIMITED 02710823 AURORA PRODUCTION (UK) LIMITED SC301743 BACTON STORAGE COMPANY LIMITED 06827589 BAIRD UNDERGROUND GAS STORAGE LIMITED 06481606 BAYERNGAS E & P LIMITED 04969335 BAYERNGAS NORTH SEA LIMITED 05262343 BERYL NORTH SEA II LIMITED BR016145; FC031081 BERYL NORTH SEA LIMITED FC030632; BR015691 BG EXPLORATION AND PRODUCTION NIGERIA LIMITED FC029038 BG GREAT BRITAIN LIMITED 00909162 BG INTERNATIONAL LIMITED 00902239 BG NORGE LIMITED 05028627 BG NORTH SEA HOLDINGS LIMITED 02383911 BG UPSTREAM A NIGERIA LIMITED FC029036 BHP BILLITON PETROLEUM GREAT BRITAIN LIMITED 00810819 BITTERN AND TRITON (UK) LIMITED 07776994 BP AMOCO EXPLORATION (FAROES) LIMITED 00856444 BP AMOCO EXPLORATION (FORTIES) LIMITED 03784366 BP AMOCO EXPLORATION (IN AMENAS) LIMITED SC135813 BP BRASIL LIMITADA FC022106; BR005205 BP EXPLORATION (ALGERIA) LIMITED 00972944 BP EXPLORATION (ALPHA) LIMITED 01021007 BP EXPLORATION (ANGOLA) LIMITED 00615393 BP EXPLORATION (AZERBAIJAN) LIMITED 02160234 BP EXPLORATION (DELTA) LIMITED 00983913 BP EXPLORATION (EPSILON) LIMITED 01004984 BP EXPLORATION (PSI) LIMITED 08900469 BP EXPLORATION (VIETNAM) LIMITED 00567256 BP EXPLORATION ANGOLA (KWANZA BENGUELA) LIMITED 07521628 BP EXPLORATION BETA LIMITED 00895797 BP EXPLORATION CHINA LIMITED 07974274 BP EXPLORATION INDONESIA LIMITED 01009905 BP EXPLORATION OPERATING COMPANY LIMITED 00305943 BP EXPLORATION ORINOCO LIMITED 00598148 BP EXPLORATION SERVICES LIMITED 00777236 BP KAZAKHSTAN LIMITED 01838589 BP SHAFAG-ASIMAN LIMITED 07599899 BRIDGE NORTH SEA (CENTRAL) LIMITED 05029843 BRIDGE PETROLEUM 1 LIMITED 10045796 BRIDGE PETROLEUM 3 LIMITED 10650893 BRIDGE PETROLEUM 4 LIMITED 10651041 BRIDGE PETROLEUM 5 LIMITED 10651049 BRIDGE PETROLEUM 6 LIMITED 10651062 BRITOIL LIMITED SC077750 BUCKEYE EXPLORATION LIMITED 04504798 CAIRN ENERGY HYDROCARBONS LIMITED SC172470 CALEDONIA EUROPE HYDROCARBONS 03568440 CALEDONIA EUROPE RESOURCES 03568322 CALENERGY GAS LIMITED 04370508 CAMBO NORTH SEA LIMITED FC031825; BR016895 CANADIAN OVERSEAS PETROLEUM (UK) LIMITED 06916260 CANADIAN SUPERIOR OIL (U.K.) LIMITED 00811825 CATS NORTH SEA LIMITED 09250798 CENTRAL GRABEN EXPLORATION LIMITED 05000672 CENTRICA BAIRD LIMITED 06655659 CENTRICA OFFSHORE UK LIMITED 04248952 CENTRICA PRODUCTION (DMF) LIMITED 01483729 CENTRICA PRODUCTION (GMA) LIMITED 04480539 CENTRICA RESOURCES PETROLEUM UK LIMITED 04487586 CH4 ENERGY LIMITED 04440303 CHALLENGER MINERALS INC. SF000836; BR005960 CHEVRON BRITAIN LIMITED 01006065 CHEVRON CAPTAIN COMPANY LLC FC005494 CHRYSAOR (U.K.) ALPHA LIMITED 02374592 CHRYSAOR (U.K.) BETA LIMITED 02316577 CHRYSAOR (U.K.) BRITANNIA LIMITED 02954364 CHRYSAOR (U.K.) ETA LIMITED 02369861 CHRYSAOR (U.K.) LAMBDA LIMITED SF000910/BR007268 CHRYSAOR (U.K.) SIGMA LIMITED 07832693 CHRYSAOR (U.K.) THETA LIMITED 01491002 CHRYSAOR (U.K.) ZETA LIMITED 01775651 CHRYSAOR CNS LIMITED 07036630 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 ETTRICK U.K. LIMITED 03976014 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 CNS (E&P) LIMITED 08034278 CNS (MAUREEN) LIMITED SC344161 COOK (E&P) LIMITED 08116495 CORSAIR PETROLEUM (CENTRAL NORTH SEA) LIMITED 05193039 CORSAIR PETROLEUM (HOLDINGS) LIMITED 05232493 CORSAIR PETROLEUM (NORTHERN NORTH SEA) LIMITED 05233326 CORSAIR PETROLEUM (SOUTHERN NORTH SEA) LIMITED 05192984 CORSAIR PETROLEUM LIMITED 04460497 CROFT EXPLORATION LIMITED SC092120 DANA PETROLEUM (BVUK) LIMITED 03337437 DANA PETROLEUM (E&P) LIMITED 02294746 DANA PETROLEUM (NORTH SEA) LIMITED 02338195 DECIPHER PRODUCTION LIMITED SC335305 DELEK ENERGY NORTH SEA LIMITED FC030608 DELEK ENERGY SYSTEMS (GIBRALTAR) LIMITED FC027495 DEO PETROLEUM U.K. LIMITED 07336090 DNO NORTH SEA (ROGB) LIMITED 01852301 DNO NORTH SEA (U.K.) LIMITED 04848017 E. F. OIL AND GAS LIMITED 03430228 E.ON RUHRGAS UK CAISTER LIMITED 03883559 E.ON RUHRGAS UK MEDIAN LIMITED 03974196 EDISON NORTH SEA LTD 09363935 EGDON RESOURCES EUROPE LIMITED 05708733 EGDON RESOURCES U.K. LIMITED 03424561 ELF EXPLORATION UK LIMITED 00810743 ENCORE (NNS) LIMITED 05301950 ENCORE OIL LIMITED 03328217 ENERGEAN EXPLORATION LIMITED 02324368 ENERGEAN UK LTD 06683599 ENERGY AFRICA UK LIMITED 02592792 ENERGY NORTH SEA (MONARB) LIMITED SC249838 ENERGY NORTH SEA (WOB) LIMITED SC250861 ENERGY RESOURCE TECHNOLOGY (U.K.) LIMITED SC264709 ENI AEP LIMITED 00307812 ENI ANS LIMITED 02554093 ENI ELGIN/FRANKLIN LIMITED 03772746 ENI HEWETT LIMITED SC090159 ENI HYDROCARBONS VENEZUELA LIMITED 01452037 ENI INDIA LIMITED 02735371 ENI LIVERPOOL BAY OPERATING COMPANY LIMITED 01003825 ENI LNS LIMITED 00970280 ENI MEP LIMITED 00231611 ENI TNS LIMITED SC055200 ENI UK LIMITED 00862823 ENI UKCS LIMITED 01019748 ENI ULX LIMITED 00936223 ENQUEST (HEATHER OILFIELD) LIMITED 01216554 ENQUEST DONS LIMITED 03351775 ENQUEST DONS OCEANIA LIMITED FC028709; BR010265 ENQUEST ENERGY LIMITED 01019698 ENQUEST FORWARD LIMITED 11486073 ENQUEST HEATHER LIMITED 02748866 ENQUEST NNS LIMITED 10573715 ENQUEST NWO LIMITED 08497436 ENQUEST PRODUCTION LIMITED 01019831 ENQUEST THISTLE LIMITED 04487223 ENQUEST UK LIMITED 01006812 ENQUEST UKCS LIMITED 06547400 ENTERPRISE OIL LIMITED 01682048 ENTERPRISE OIL MIDDLE EAST LIMITED 02650009 ENTERPRISE OIL U.K. LIMITED 02290358 EQ PETROLEUM SABAH LTD 07211014 EQUINOR EXPLORATION UK LIMITED 01500685 EQUINOR UK LIMITED 01285743 ERT CAMELOT LIMITED SC301741 ESSO EXPLORATION AND PRODUCTION UK LIMITED 00207426 EVERARD ENERGY LIMITED 08066733 EXXONMOBIL CNNS LIMITED 13018823 FAIRFIELD BETULA LIMITED 04465204 FAIRFIELD FAGUS LIMITED 05461823 FINA EXPLORATION LIMITED 00808167 FINA PETROLEUM DEVELOPMENT LIMITED 00740632 FIRST OIL EXPLORATION (UK) LIMITED 01005418 FIRST OIL EXPRO LIMITED 01021486 FIRST OIL INTERNATIONAL NORTH SEA LIMITED 02487444 FIRST OIL SNS LIMITED 00986309 FUJAIRAH OIL AND GAS UK LLC / ROCKROSE UKCS8 LLC FC009587 / BR001797 GAZ DE FRANCE EXPLORATION UNITED KINGDOM B.V. FC023605 GEOSOLUTIONS LIMITED 03441912 GRAMPIAN AVIATION FUELLING SERVICES LIMITED 03716230 HANSA HYDROCARBONS LIMITED 06442172 HARBOUR ENERGY DEVELOPMENTS LIMITED 03230514 HESS (OIL & GAS) LIMITED 03161815 HESS LIMITED 00807346 HUMBER GATHERING SYSTEM LIMITED 11110577 HURRICANE ENERGY PLC 05245689 IDEMITSU E&P SHETLAND LTD. 06954535 IGAS EXPLORATION UK LIMITED 04323945 INEOS CLIPPER SOUTH B LIMITED 04649606 INEOS CLIPPER SOUTH C LIMITED 04967270 INEOS E&P (UK) LIMITED 04376184 INEOS FPS LIMITED 10660338 INEOS UK SNS LIMITED 01021338 IOG SOUTHERN NORTH SEA LIMITED 08619688 IONA UK DEVELOPMENTS CO LIMITED SC467651 IONA UK HUNTINGTON LIMITED 07385624 IRANIAN OIL COMPANY (U.K.) LIMITED 01019769 ITHACA ALPHA (N.I.) LIMITED NI073431 ITHACA CAUSEWAY LIMITED 06167799 ITHACA DORSET LIMITED 01135213 ITHACA ENERGY (UK) LIMITED SC272009 ITHACA EPSILON LIMITED 05979869 ITHACA EXPLORATION LIMITED 05914627 ITHACA GAMMA LIMITED 05929104 ITHACA GSA LIMITED FC033620 ITHACA MINERALS (NORTH SEA) LIMITED SC274666 ITHACA OIL AND GAS LIMITED 01546623 ITHACA PIPELINE LIMITED 02607087 ITHACA SP UK LIMITED 02586927 ITHACA SPL LIMITED 01275469 JAPEX UK E&P LIMITED 08946587 JERSEY PETROLEUM LTD 06490608 JX NIPPON EXPLORATION AND PRODUCTION (U.K.) LIMITED 03288689 KELLAS CATS LIMITED 08021886 KELLAS NORTH SEA 2 LIMITED 10778448 KOREA CAPTAIN COMPANY LIMITED 03141093 LIVERPOOL BAY LIMITED 08555007 LUNDIN UK EXPLORATION LIMITED 00999917 MAERSK OIL EXPLORATION UK LIMITED 02609436 MAERSK OIL GRYPHON LIMITED 01316633 MARUBENI OIL & GAS (NORTH SEA) LIMITED SC238015 MARUBENI OIL & GAS (U.K.) LIMITED 03947050 MCX DUNLIN (UK) LIMITED 06451712 MCX EXPLORATION (UK) LIMITED 05889471 MCX OSPREY (UK) LIMITED 06451720 MITSUI E&P UK LIMITED 07652477 MOC EXPLORATION (U.K.) LIMITED FC017821 MOL OPERATIONS UK LTD 09110642 MOLGROWEST (I) LIMITED SC278868 MOLGROWEST (II) LIMITED 04922555 MONTROSE INDUSTRIES LIMITED 00654944 MOSAIC (TRISTAN) LIMITED 05820436 MOSAIC NATURAL RESOURCES LIMITED SC253223 MURPHY MUNGO LIMITED 07944027 MURPHY PETROLEUM LIMITED 00811102 MURPHY SCHIEHALLION LIMITED 07944011 MUSTANG OIL LIMITED SC094132 NAUTICAL PETROLEUM LIMITED 04362104 NEO ENERGY (CNS) LIMITED SC309081 NEO ENERGY (PRODUCTION) LIMITED 05896824 NEO ENERGY (SNS) LIMITED SC291165 NEO ENERGY (UKCS) LIMITED 02669936 NEO ENERGY (ZEX) LIMITED 05834920 NEO ENERGY (ZNI) LIMITED NI029409 NEO ENERGY (ZNS) LIMITED 06576309 NEO ENERGY (ZOG) LIMITED 05693929 NEO ENERGY (ZPL) LIMITED 08818762 NEO ENERGY CENTRAL NORTH SEA LIMITED 05894683 NEO ENERGY ENTERPRISES LIMITED 04388397 NEO ENERGY PATHWAY LIMITED 06212075 NEO ENERGY PRODUCTION UK LIMITED 12086835 NEO