| 🥇 | NEO ENERGY PATHWAY LIMITED | 100Excellent | #2 | New | London |
| 🥈 | VITOL BROKING LIMITED | 100Excellent | #12 | ↑ 2.4 | London |
| 🥉 | NEO ENERGY NATURAL RESOURCES LIMITED | 100Excellent | #14 | – 0.0 | London |
| #4 | WMR JV INVESTCO LIMITED | 100Excellent | #20 | New | London |
| #5 | INNER DOWSING WIND FARM LIMITED | 100Excellent | #52 | – 0.0 | Scotland |
| #6 | CNR INTERNATIONAL (U.K.) DEVELOPMENTS LIMITED | 100Excellent | #53 | – 0.0 | Yorkshire and The Humber |
| #7 | EASTERN POWER NETWORKS PLC | 100Excellent | #55 | – 0.0 | London |
| #8 | UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED | 100Excellent | #77 | ↑ 0.3 | North West |
| #9 | BRYT ENERGY LIMITED | 100Excellent | #82 | – 0.0 | West Midlands |
| #10 | SONATRACH GAS MARKETING UK LIMITED | 100Excellent | #85 | ↑ 2.6 | London |
| #11 | EXXONMOBIL MARINE LIMITED | 99Excellent | #86 | — | South East |
| #12 | SMARTESTENERGY LIMITED | 99Excellent | #88 | ↓ 0.1 | London |
| #13 | DRAX ENERGY SOLUTIONS LIMITED | 99Excellent | #95 | ↑ 1.1 | Yorkshire and The Humber |
| #14 | UTILITY WAREHOUSE LIMITED | 99Excellent | #107 | ↑ 6.8 | London |
| #15 | OPHIR ENERGY LIMITED | 99Excellent | #108 | ↑ 1.6 | South East |
| #16 | ENGIE POWER LIMITED | 99Excellent | #110 | ↓ 0.1 | Yorkshire and The Humber |
| #17 | TOTALENERGIES GAS & POWER LIMITED | 99Excellent | #139 | ↑ 0.1 | South East |
| #18 | INEOS E&P (UK) LIMITED | 98Excellent | #187 | ↑ 5.6 | London |
| #19 | E.ON UK ENERGY MARKETS LIMITED | 98Excellent | #188 | ↓ 0.8 | West Midlands |
| #20 | ESSO EXPLORATION AND PRODUCTION UK LIMITED | 98Excellent | #191 | — | South East |
| #21 | CASTROL LIMITED | 98Excellent | #241 | — | South East |
| #22 | EDF ENERGY CUSTOMERS LIMITED | 98Excellent | #255 | ↓ 0.1 | London |
| #23 | EVOLVE ENERGY SUPPLY LIMITED | 97Excellent | #298 | ↑ 1.1 | North West |
| #24 | GREENERGY FUELS LIMITED | 97Excellent | #314 | ↑ 0.5 | London |
| #25 | UNITED UTILITIES WATER LIMITED | 96Excellent | #373 | ↓ 0.1 | North West |
| #26 | UK FUELS LIMITED | 96Excellent | #386 | ↑ 0.5 | North West |
| #27 | WALDORF PRODUCTION UK PLC | 96Excellent | #390 | New | North West |
| #28 | RWE RENEWABLES UK LONDON ARRAY LIMITED | 96Excellent | #393 | ↑ 4.5 | South West |
| #29 | SOUTH HOOK LNG TERMINAL COMPANY LTD. | 95Excellent | #435 | ↓ 0.2 | Wales |
| #30 | SERICA ENERGY MISTRAL LIMITED | 95Excellent | #437 | ↓ 1.8 | London |
| #31 | INEOS ENERGY TRADING LIMITED | 95Excellent | #444 | — | South East |
| #32 | SHELL ENERGY EUROPE LIMITED | 95Excellent | #449 | ↑ 1.6 | London |
| #33 | SERICA ENERGY MELTEMI LIMITED | 95Excellent | #456 | ↓ 2.6 | London |
| #34 | SCOTTISHPOWER ENERGY MANAGEMENT LIMITED | 95Excellent | #477 | ↓ 0.2 | Scotland |
| #35 | BRITISH PIPELINE AGENCY LIMITED | 95Excellent | #483 | ↑ 0.5 | East of England |
| #36 | OPUS ENERGY RENEWABLES LIMITED | 95Excellent | #485 | ↓ 0.4 | Yorkshire and The Humber |
| #37 | CUBICO SUSTAINABLE INVESTMENTS LIMITED | 95Excellent | #501 | ↓ 0.7 | London |
| #38 | THE RENEWABLES INFRASTRUCTURE GROUP (UK) LIMITED | 95Excellent | #507 | ↓ 1.8 | London |
| #39 | OCTOPUS ENERGY LIMITED | 94Excellent | #528 | ↑ 1.3 | London |
| #40 | CORONA ENERGY RETAIL 2 LIMITED | 94Excellent | #552 | ↑ 1.0 | Scotland |
| #41 | ENGIE GAS LIMITED | 94Excellent | #560 | ↑ 2.3 | Yorkshire and The Humber |
| #42 | INEOS UK SNS LIMITED | 94Excellent | #588 | ↓ 6.2 | London |
| #43 | THE CARBON TRUST | 94Excellent | #597 | New | London |
| #44 | THE FUELCARD COMPANY UK LIMITED | 94Excellent | #601 | ↑ 2.0 | South West |
| #45 | TEESSIDE GAS & LIQUIDS PROCESSING | 93Excellent | #627 | ↓ 4.1 | London |
| #46 | EQUION ENERGIA LIMITED | 93Excellent | #631 | — | London |
| #47 | POWER NI ENERGY LIMITED | 93Excellent | #636 | ↓ 0.4 | Northern Ireland |
| #48 | GAS PLUS SUPPLY LIMITED | 93Excellent | #649 | ↑ 2.4 | London |
| #49 | PETCO TRADING (UK) LIMITED | 93Excellent | #650 | ↑ 11.8 | London |
| #50 | C H JONES LIMITED | 92Excellent | #682 | ↑ 9.1 | South West |
| #51 | DRAGON LNG LIMITED | 92Excellent | #691 | ↑ 4.0 | Wales |
| #52 | GENESIS OIL GAS CONSULTANTS LIMITED | 92Excellent | #693 | ↑ 14.3 | London |
| #53 | GALLOPER WIND FARM LIMITED | 92Excellent | #697 | ↑ 10.1 | South West |
| #54 | FIRST HYDRO COMPANY | 92Excellent | #703 | ↑ 2.9 | Wales |
| #55 | TULLOW GROUP SERVICES LIMITED | 92Excellent | #711 | ↑ 3.3 | London |
| #56 | CNR INTERNATIONAL (U.K.) LIMITED | 92Excellent | #744 | ↓ 0.1 | Yorkshire and The Humber |
| #57 | SCOTTISHPOWER RENEWABLES (WODS) LIMITED | 92Excellent | #748 | ↓ 2.0 | Scotland |
| #58 | TAQA BRATANI LIMITED | 92Excellent | #751 | ↑ 1.8 | London |
| #59 | CNOOC PETROLEUM EUROPE LIMITED | 91Excellent | #763 | ↓ 0.5 | London |
| #60 | DANA PETROLEUM (E&P) LIMITED | 91Excellent | #783 | — | London |
| #61 | CORONA ENERGY RETAIL 4 LIMITED | 91Excellent | #797 | ↓ 6.8 | Unknown |
| #62 | SSE AIRTRICITY ENERGY SUPPLY (NI) LIMITED | 91Excellent | #800 | ↓ 2.9 | Northern Ireland |
| #63 | APIOIL UK LIMITED | 91Excellent | #828 | ↓ 0.7 | London |
| #64 | VERTAS GROUP LIMITED | 91Excellent | #830 | ↓ 3.2 | East of England |
| #65 | LIMEJUMP ENERGY LIMITED | 91Excellent | #836 | ↓ 3.4 | London |
| #66 | SCOTLAND GAS NETWORKS PLC | 90Excellent | #844 | ↑ 3.7 | Scotland |
| #67 | SOUTHERN GAS NETWORKS PLC | 90Excellent | #860 | ↑ 2.0 | South East |
| #68 | HIGHLAND FUELS LIMITED | 90Excellent | #863 | ↑ 2.6 | Scotland |
| #69 | SCOTIA GAS NETWORKS LIMITED | 90Excellent | #877 | ↑ 3.3 | South East |
| #70 | SCOTTISHPOWER ENERGY RETAIL LIMITED | 90Excellent | #882 | ↑ 1.4 | Scotland |
| #71 | TRITON KNOLL OFFSHORE WIND FARM LIMITED | 90Good | #923 | New | South West |
| #72 | SHELL ENERGY UK LIMITED | 89Good | #964 | ↑ 5.1 | London |
| #73 | CHEVRON BRITAIN LIMITED | 89Good | #1012 | ↓ 6.5 | London |
| #74 | RHYL FLATS WIND FARM LIMITED | 88Good | #1078 | New | South West |
| #75 | PERENCO UK LIMITED | 88Good | #1099 | ↓ 1.6 | London |
| #76 | STORENGY UK LIMITED | 88Good | #1109 | New | North West |
| #77 | SURESERVE ENERGY SERVICES METERS LIMITED | 87Good | #1130 | New | London |
| #78 | REPSOL RESOURCES UK LIMITED | 87Good | #1135 | ↑ 8.2 | London |
| #79 | SHELL INTERNATIONAL PETROLEUM COMPANY LIMITED | 87Good | #1136 | ↑ 2.6 | London |
| #80 | NUCLEAR RESTORATION SERVICES LIMITED | 87Good | #1137 | ↓ 1.4 | North West |
| #81 | OVO ENERGY LTD | 87Good | #1145 | ↓ 2.6 | South West |
| #82 | KUWAIT PETROLEUM INTERNATIONAL AVIATION COMPANY (U.K.) LIMITED | 87Good | #1155 | ↑ 3.9 | South East |
| #83 | DUDGEON OFFSHORE WIND LIMITED | 86Good | #1206 | ↓ 2.4 | London |
| #84 | STRONELAIRG WIND FARM LIMITED | 86Good | #1219 | ↓ 0.2 | Scotland |
| #85 | GAZPROM MARKETING & TRADING RETAIL LIMITED | 86Good | #1227 | ↑ 1.6 | London |
| #86 | SEVERN TRENT WATER LIMITED | 86Good | #1236 | ↓ 3.2 | West Midlands |
| #87 | URENCO CHEMPLANTS LIMITED | 86Good | #1268 | ↓ 3.1 | North West |
| #88 | RWE RENEWABLES UK SWINDON LIMITED | 86Good | #1288 | ↑ 16.5 | South West |
| #89 | SSE AIRTRICITY GAS SUPPLY (NI) LIMITED | 85Good | #1298 | ↓ 2.9 | Northern Ireland |
| #90 | TOTALENERGIES E&P NORTH SEA UK LIMITED | 85Good | #1305 | — | London |
| #91 | TOTALENERGIES OFFSHORE UK LIMITED | 85Good | #1307 | — | London |
| #92 | E. F. OIL AND GAS LIMITED | 85Good | #1310 | — | London |
| #93 | INEOS UK E&P HOLDINGS LIMITED | 85Good | #1319 | ↑ 0.8 | Scotland |
| #94 | NATIONAL GAS METERING LIMITED | 85Good | #1337 | ↑ 2.0 | West Midlands |
| #95 | PHILLIPS 66 LIMITED | 85Good | #1374 | ↓ 0.4 | London |
| #96 | DCC ENERGY LTD | 84Good | #1436 | ↓ 1.2 | Northern Ireland |
| #97 | ELECTRICITY NORTH WEST LIMITED | 84Good | #1447 | ↓ 0.9 | North West |
| #98 | SCOTTISHPOWER RENEWABLES (UK) LIMITED | 84Good | #1489 | ↓ 1.7 | Northern Ireland |
| #99 | NORTHERN GAS NETWORKS OPERATIONS LIMITED | 84Good | #1509 | ↑ 1.4 | Yorkshire and The Humber |
| #100 | AMENTUM CLEAN ENERGY LIMITED | 83Good | #1562 | ↑ 7.5 | London |
