| 🥇 | CNR INTERNATIONAL (U.K.) DEVELOPMENTS LIMITED | 100Excellent | #6 | – 0.0 | Yorkshire and The Humber |
| 🥈 | LYNN WIND FARM LIMITED | 100Excellent | #26 | — | Yorkshire and The Humber |
| 🥉 | INNER DOWSING WIND FARM LIMITED | 100Excellent | #27 | – 0.0 | Scotland |
| #4 | INDEPENDENT PIPELINES LIMITED | 100Excellent | #57 | — | East of England |
| #5 | EASTERN POWER NETWORKS PLC | 100Excellent | #66 | – 0.0 | London |
| #6 | VITOL BROKING LIMITED | 100Excellent | #77 | – 0.0 | London |
| #7 | ENGIE POWER LIMITED | 100Excellent | #80 | ↑ 0.5 | Yorkshire and The Humber |
| #8 | BRYT ENERGY LIMITED | 100Excellent | #96 | – 0.0 | West Midlands |
| #9 | OPHIR ENERGY LIMITED | 100Excellent | #98 | ↑ 0.2 | South East |
| #10 | SONATRACH GAS MARKETING UK LIMITED | 99Excellent | #111 | ↑ 0.1 | London |
| #11 | UTILITY WAREHOUSE LIMITED | 99Excellent | #113 | – 0.0 | London |
| #12 | SMARTESTENERGY LIMITED | 99Excellent | #131 | ↓ 0.3 | London |
| #13 | UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED | 99Excellent | #137 | ↓ 0.3 | North West |
| #14 | DRAX ENERGY SOLUTIONS LIMITED | 99Excellent | #167 | ↓ 0.7 | Yorkshire and The Humber |
| #15 | EXXONMOBIL MARINE LIMITED | 98Excellent | #207 | ↓ 1.2 | South East |
| #16 | TOTALENERGIES GAS & POWER LIMITED | 98Excellent | #208 | ↓ 0.5 | South East |
| #17 | BRITISH PIPELINE AGENCY LIMITED | 98Excellent | #288 | ↑ 2.6 | East of England |
| #18 | E.ON UK ENERGY MARKETS LIMITED | 97Excellent | #304 | ↓ 0.8 | West Midlands |
| #19 | CORONA ENERGY RETAIL 4 LIMITED | 97Excellent | #315 | ↑ 12.4 | Unknown |
| #20 | EDF ENERGY CUSTOMERS LIMITED | 97Excellent | #320 | ↓ 0.2 | London |
| #21 | LIMEJUMP ENERGY LIMITED | 97Excellent | #321 | ↑ 6.7 | London |
| #22 | E D F TRADING LIMITED | 97Excellent | #326 | — | London |
| #23 | GREENERGY FUELS LIMITED | 97Excellent | #354 | ↑ 0.1 | London |
| #24 | SHELL ENERGY EUROPE LIMITED | 97Excellent | #358 | ↑ 1.9 | London |
| #25 | OPUS ENERGY RENEWABLES LIMITED | 97Excellent | #382 | ↑ 1.9 | Yorkshire and The Humber |
| #26 | SOUTH HOOK LNG TERMINAL COMPANY LTD. | 97Excellent | #391 | ↑ 1.2 | Wales |
| #27 | ESSO EXPLORATION AND PRODUCTION UK LIMITED | 97Excellent | #392 | ↓ 1.5 | South East |
| #28 | INEOS UK SNS LIMITED | 97Excellent | #396 | ↑ 2.8 | London |
| #29 | RWE RENEWABLES UK HUMBER WIND LIMITED | 96Excellent | #442 | — | South West |
| #30 | INEOS ENERGY TRADING LIMITED | 96Excellent | #460 | ↑ 0.5 | South East |
| #31 | BRITISH GAS TRADING LIMITED | 96Excellent | #484 | — | South East |
| #32 | CORONA ENERGY RETAIL 2 LIMITED | 95Excellent | #489 | ↑ 6.0 | Scotland |
| #33 | CUBICO SUSTAINABLE INVESTMENTS LIMITED | 95Excellent | #492 | ↑ 0.8 | London |
| #34 | UNITED UTILITIES WATER LIMITED | 95Excellent | #512 | ↓ 0.9 | North West |
| #35 | OCTOPUS ENERGY LIMITED | 95Excellent | #514 | ↑ 0.7 | London |
| #36 | SCOTTISHPOWER RENEWABLES (WODS) LIMITED | 95Excellent | #521 | ↑ 3.5 | Scotland |
| #37 | POWER NI ENERGY LIMITED | 95Excellent | #528 | ↑ 1.8 | Northern Ireland |
| #38 | INEOS E&P (UK) LIMITED | 95Excellent | #529 | ↓ 3.2 | London |
| #39 | SCOTTISHPOWER ENERGY MANAGEMENT LIMITED | 95Excellent | #553 | ↓ 0.3 | Scotland |
| #40 | ENGIE GAS LIMITED | 94Excellent | #581 | ↑ 0.3 | Yorkshire and The Humber |
| #41 | SERICA ENERGY CHINOOK LIMITED | 94Excellent | #599 | New | Scotland |
| #42 | UK FUELS LIMITED | 94Excellent | #604 | ↓ 1.7 | North West |
| #43 | THE RENEWABLES INFRASTRUCTURE GROUP (UK) LIMITED | 94Excellent | #673 | ↓ 1.0 | London |
| #44 | PETROINEOS FUELS LIMITED | 93Excellent | #691 | — | London |
| #45 | CNR INTERNATIONAL (U.K.) LIMITED | 93Excellent | #695 | ↑ 1.7 | Yorkshire and The Humber |
| #46 | SERICA ENERGY MISTRAL LIMITED | 93Excellent | #712 | ↓ 2.2 | London |
| #47 | SCOTTISHPOWER ENERGY RETAIL LIMITED | 93Excellent | #727 | ↑ 3.0 | Scotland |
| #48 | TAQA BRATANI LIMITED | 93Excellent | #728 | ↑ 1.5 | London |
| #49 | SCIRA OFFSHORE ENERGY LIMITED | 93Excellent | #752 | ↑ 27.1 | London |
| #50 | SSE AIRTRICITY ENERGY SUPPLY (NI) LIMITED | 93Excellent | #757 | ↑ 1.8 | Northern Ireland |
| #51 | GAS PLUS SUPPLY LIMITED | 93Excellent | #761 | ↓ 0.2 | London |
| #52 | FIRST HYDRO COMPANY | 93Excellent | #762 | ↑ 1.0 | Wales |
| #53 | SPIRIT ENERGY PRODUCTION UK LIMITED | 93Excellent | #772 | — | South East |
| #54 | HIGHLAND FUELS LIMITED | 93Excellent | #777 | ↑ 2.3 | Scotland |
| #55 | THE FUELCARD COMPANY UK LIMITED | 92Excellent | #781 | ↓ 1.1 | South West |
| #56 | BP GAS MARKETING LIMITED | 92Excellent | #787 | — | South East |
| #57 | EVOLVE ENERGY SUPPLY LIMITED | 92Excellent | #796 | ↓ 4.7 | North West |
| #58 | M GROUP WATER (NETWORK INFRASTRUCTURE) LIMITED | 92Excellent | #809 | ↑ 5.1 | East of England |
| #59 | THE CARBON TRUST | 92Excellent | #833 | ↓ 1.7 | London |
| #60 | TULLOW GROUP SERVICES LIMITED | 92Excellent | #836 | ↓ 0.1 | London |
| #61 | CNOOC PETROLEUM EUROPE LIMITED | 91Excellent | #881 | ↑ 0.1 | London |
| #62 | SCOTLAND GAS NETWORKS PLC | 91Excellent | #910 | ↑ 0.6 | Scotland |
| #63 | SOUTHERN GAS NETWORKS PLC | 91Excellent | #917 | ↑ 1.1 | South East |
| #64 | SCOTIA GAS NETWORKS LIMITED | 91Excellent | #928 | ↑ 0.6 | South East |
| #65 | NUCLEAR RESTORATION SERVICES LIMITED | 91Excellent | #947 | ↑ 2.1 | North West |
| #66 | PETCO TRADING (UK) LIMITED | 90Excellent | #975 | ↓ 2.5 | London |
| #67 | SHELL ENERGY UK LIMITED | 90Excellent | #991 | ↑ 1.1 | London |
| #68 | SSE AIRTRICITY GAS SUPPLY (NI) LIMITED | 90Good | #1026 | ↑ 4.5 | Northern Ireland |
| #69 | C H JONES LIMITED | 90Good | #1046 | ↓ 2.6 | South West |
| #70 | DANA PETROLEUM (E&P) LIMITED | 90Good | #1087 | ↓ 1.6 | London |
| #71 | KUWAIT PETROLEUM INTERNATIONAL AVIATION COMPANY (U.K.) LIMITED | 89Good | #1088 | ↑ 8.6 | South East |
| #72 | GNB INDUSTRIAL POWER (UK) LIMITED | 89Good | #1097 | ↑ 17.1 | North West |
| #73 | TOTALENERGIES E&P NORTH SEA UK LIMITED | 89Good | #1100 | ↑ 4.0 | London |
| #74 | TOTALENERGIES OFFSHORE UK LIMITED | 89Good | #1102 | ↑ 4.0 | London |
| #75 | OVO ENERGY LTD | 89Good | #1103 | ↑ 2.1 | South West |
| #76 | E. F. OIL AND GAS LIMITED | 89Good | #1104 | ↑ 4.0 | London |
| #77 | VERTAS GROUP LIMITED | 89Good | #1134 | ↓ 1.4 | East of England |
| #78 | APIOIL UK LIMITED | 89Good | #1158 | ↓ 1.6 | London |
| #79 | URENCO CHEMPLANTS LIMITED | 88Good | #1221 | ↑ 1.5 | North West |
| #80 | GAZPROM MARKETING & TRADING RETAIL LIMITED | 88Good | #1263 | ↑ 1.7 | London |
| #81 | GALLOPER WIND FARM LIMITED | 88Good | #1310 | ↓ 4.6 | South West |
| #82 | TRITON KNOLL OFFSHORE WIND FARM LIMITED | 87Good | #1349 | ↓ 2.5 | South West |
| #83 | RHYL FLATS WIND FARM LIMITED | 87Good | #1350 | ↓ 0.9 | South West |
| #84 | RWE RENEWABLES UK LIMITED | 87Good | #1364 | — | South West |
| #85 | RWE RENEWABLES UK SWINDON LIMITED | 87Good | #1402 | ↑ 1.0 | South West |
| #86 | RAMPION OFFSHORE WIND LIMITED | 86Good | #1421 | — | South West |
| #87 | REPSOL RESOURCES UK LIMITED | 86Good | #1424 | ↓ 1.0 | London |
| #88 | DUDGEON OFFSHORE WIND LIMITED | 86Good | #1427 | ↓ 0.1 | London |
| #89 | CHEVRON BRITAIN LIMITED | 86Good | #1433 | ↓ 2.5 | London |
| #90 | STORENGY UK LIMITED | 86Good | #1434 | ↓ 1.4 | North West |
| #91 | ELECTRICITY NORTH WEST LIMITED | 86Good | #1443 | ↑ 2.0 | North West |
| #92 | NATIONAL GAS METERING LIMITED | 86Good | #1466 | ↑ 1.2 | West Midlands |
| #93 | RWE RENEWABLES UK ONSHORE WIND LIMITED | 86Good | #1477 | ↑ 4.9 | South West |
| #94 | SEVERN TRENT WATER LIMITED | 86Good | #1482 | ↓ 0.3 | West Midlands |
| #95 | COSTAIN OIL, GAS & PROCESS LIMITED | 86Good | #1494 | ↑ 4.2 | South East |
| #96 | NORTHERN GAS NETWORKS OPERATIONS LIMITED | 86Good | #1499 | ↑ 2.1 | Yorkshire and The Humber |
| #97 | DRAGON LNG LIMITED | 85Good | #1513 | ↓ 6.8 | Wales |
| #98 | AMENTUM CLEAN ENERGY LIMITED | 85Good | #1536 | ↑ 2.3 | London |
| #99 | PHILLIPS 66 LIMITED | 85Good | #1537 | ↑ 0.4 | London |
| #100 | CASTROL LIMITED | 85Good | #1580 | ↓ 12.8 | South East |
