| 1 | ▲2 |  | Future Tech Solar | Energy Solutions | Building Retrofit & Refurbishment | Authority |
| 2 | ▼1 |  | Eevery | Measurement & Reporting | Carbon Accounting | Authority |
| 3 | ▼1 |  | 51toCarbonZero | Measurement & Reporting | Carbon Accounting | Authority |
| 4 | ▲54 |  | Accenture (UK) Ltd | Advisory & Strategy | | Basic |
| 5 | ▲23 |  | ads-tec Energy GmbH | Energy Solutions | | Basic |
| 6 | ▲106 |  | 3Ti Energy Hubs | Energy Solutions | | Basic |
| 7 | ▲623 |  | Ember | Energy Solutions | | Basic |
| 8 | ▲67 |  | Aequilibria Srl | Advisory & Strategy | | Basic |
| 9 | ▲77 |  | Adam Smith Center | Training & Culture | | Basic |
| 10 | ▲167 |  | AccountAbility | Advisory & Strategy | | Basic |
| 11 | ▲13 |  | Action Sustainability | Advisory & Strategy | | Basic |
| 12 | ▲85 |  | A Good Thing | Impact Organisations | | Basic |
| 13 | ▲341 |  | Watershed | Measurement & Reporting | | Basic |
| 14 | ▲15 |  | Aggreko | Energy Solutions | | Basic |
| 15 | ▲375 |  | Elite Energy Teesside | Energy Solutions | | Basic |
| 16 | ▲691 |  | AG impact | Advisory & Strategy | | Basic |
| 17 | ▲146 |  | 100Green | Energy Solutions | | Basic |
| 18 | ▲28 |  | Acre | Training & Culture | Recruitment & Talent Services | Authority |
| 19 | ▲154 |  | Affirmative Sustainability | Measurement & Reporting | | Basic |
| 20 | ▲27 |  | Anthesis Group | Advisory & Strategy | | Basic |
| 21 | ▲57 |  | Cyclescheme | Mobility | | Basic |
| 22 | ▲246 |  | StepChange | Measurement & Reporting | | Basic |
| 23 | ▼13 |  | 1% for the Planet | Impact Organisations | | Basic |
| 24 | ▲16 |  | Abatable | Carbon Markets & Offsetting | | Basic |
| 25 | ▲357 |  | Ad Net Zero | Advisory & Strategy | | Basic |
| 26 | ▲219 |  | Tech Zero | Membership Organisations & Alliances | | Basic |
| 27 | ▲98 |  | WBCSD Academy | Training & Culture | | Basic |
| 28 | ▲7 |  | Aura | Finance & Funding | | Basic |
| 29 | ▼2 |  | 3DegreeGroup | Advisory & Strategy | | Basic |
| 30 | ▲115 |  | ACA Group | Advisory & Strategy | | Basic |
| 31 | ▲218 |  | World Land Trust | Biodiversity & Nature | | Basic |
| 32 | ▲51 |  | Tesla | Energy Solutions | | Basic |
| 33 | ▲106 |  | ACT | Carbon Markets & Offsetting | | Basic |
| 34 | ▲269 |  | Above and Beyond Recuitment | Training & Culture | | Basic |
| 35 | ▲269 |  | ACRcarbon | Carbon Markets & Offsetting | | Basic |
| 36 | ▲111 |  | B Corporation | Certifications & Standards | | Basic |
| 37 | ▲484 |  | ESGPRO | Advisory & Strategy | | Basic |
| 38 | ▲42 |  | Risilience | Advisory & Strategy | | Basic |
| 39 | ▼5 |  | Ailuna | Training & Culture | | Basic |
| 40 | ▲417 |  | SuReal | Advisory & Strategy | | Basic |
| 41 | ▼3 |  | Cority | Measurement & Reporting | | Basic |
| 42 | ▲513 |  | Argon & Co | Advisory & Strategy | | Basic |
| 43 | ▲338 |  | 1t | Biodiversity & Nature | | Basic |
| 44 | ▲303 |  | Forliance | Carbon Markets & Offsetting | | Basic |
| 45 | ▲477 |  | Furthr | Measurement & Reporting | | Basic |
| 46 | ▲80 |  | AdGreen | Training & Culture | | Basic |
| 47 | ▲422 |  | albert | Certifications & Standards | | Basic |
| 48 | ▲50 |  | AM Ventures | Finance & Funding | | Basic |
| 49 | ▲174 |  | aashe | Membership Organisations & Alliances | | Basic |
| 50 | ▼8 |  | Keep Energy Systems | Energy Solutions | | Basic |
| 51 | ▼7 |  | ScottishPower | Energy Solutions | | Basic |
| 52 | ▲202 |  | Valda Energy Limited | Energy Solutions | | Basic |
| 53 | ▲126 |  | Auditel | Advisory & Strategy | | Basic |
| 54 | ▲308 |  | Aether | Advisory & Strategy | | Basic |
| 55 | ▲480 |  | Ample | Mobility | | Basic |
| 56 | ▲554 |  | Mitie | Waste & Circular Economy | | Basic |
| 57 | ▲154 |  | Believ | Energy Solutions | | Basic |
| 58 | ▲576 |  | Greentech Alliance | Membership Organisations & Alliances | | Basic |
| 59 | ▲102 |  | World Fund | Finance & Funding | | Basic |
| 60 | ▲534 |  | Amp X | Energy Solutions | | Basic |
| 61 | ▲537 |  | Axiom | Measurement & Reporting | | Basic |
| 62 | ▲196 |  | Benchmark Gensuite | Measurement & Reporting | | Basic |
| 63 | ▼31 |  | POD Point | Energy Solutions | | Basic |
| 64 | ▼12 |  | Rock Power Connections | Energy Solutions | | Basic |
| 65 | ▲226 |  | The Pollinators | Training & Culture | | Basic |
| 66 | ▲67 |  | Nyobolt | Energy Solutions | | Basic |
| 67 | ▲26 |  | Phoenix Contact Innovation Ventures | Finance & Funding | | Basic |
| 68 | ▲552 |  | Enhesa | Advisory & Strategy | | Basic |
| 69 | ▲621 |  | McKinsey & Company | Advisory & Strategy | | Basic |
| 70 | ▲328 |  | RecycleIT | Waste & Circular Economy | | Basic |
| 71 | ▲329 |  | Treeconomy | Biodiversity & Nature | | Basic |
| 72 | ▲92 |  | Low Carbon | Energy Solutions | | Basic |
| 73 | ▼58 |  | Bedrock Energy | Energy Solutions | | Basic |
| 74 | ▲104 |  | Alphabet | Mobility | | Basic |
| 75 | ▲39 |  | EnergyCAP | Energy Solutions | | Basic |
| 76 | ▲273 |  | LongPath Technologies | Measurement & Reporting | | Basic |
| 77 | ▼26 |  | Palladium | Advisory & Strategy | | Basic |
| 78 | ▲191 |  | The Ecological Entrepreneur | Advisory & Strategy | | Basic |
| 79 | ▲191 |  | TÜV SÜD | Certifications & Standards | | Basic |
| 80 | ▲360 |  | UL LLC | Advisory & Strategy | | Basic |
| 81 | ▲276 |  | Tomorrow | Training & Culture | | Basic |
| 82 | ▲365 |  | Persefoni | Measurement & Reporting | | Basic |
| 83 | ▲198 |  | InnoEnergy | Energy Solutions | | Basic |
| 84 | ▼80 |  | Verte Ltd | Advisory & Strategy | Energy Efficiency Solutions | Engage |
| 85 | ▼29 |  | Deloitte | Advisory & Strategy | | Basic |
| 86 | ▲117 |  | Humber Zero | Carbon Markets & Offsetting | | Basic |
| 87 | ▲50 |  | Tuskercars | Mobility | | Basic |
| 88 | ▲371 |  | WHEB | Finance & Funding | | Basic |
| 89 | ▲454 |  | Altruistiq | Measurement & Reporting | | Basic |
| 90 | ▲54 |  | Ramco (UK) Ltd | Waste & Circular Economy | | Basic |
| 91 | ▲289 |  | Bain & Company | Advisory & Strategy | | Basic |
| 92 | ▲529 |  | Bankers for Net Zero | Finance & Funding | | Basic |
| 93 | ▲213 |  | Carbon Neutral Britain | Carbon Markets & Offsetting | | Basic |
| 94 | ▼53 |  | UK Carbon Registry | Carbon Markets & Offsetting | | Basic |
| 95 | ▲464 |  | CDSB | Certifications & Standards | | Basic |
| 96 | ▼87 |  | Charm Industrial | Carbon Markets & Offsetting | | Basic |
| 97 | ▲132 |  | Climate Action 100+ | Membership Organisations & Alliances | | Basic |
| 98 | ▲217 |  | Humber 2030 Vision | Membership Organisations & Alliances | | Basic |
| 99 | ▲56 |  | Net Zero Now | Measurement & Reporting | | Basic |
| 100 | ▲389 |  | Health Care Without Harm | Membership Organisations & Alliances | | Basic |
| 101 | ▲219 |  | Race To Zero | Membership Organisations & Alliances | | Basic |
| 102 | ▲221 |  | RenewableUK | Energy Solutions | | Basic |
| 103 | ▲402 |  | Treeo | Carbon Markets & Offsetting | | Basic |
| 104 | ▲595 |  | Powerhub Solutions | Energy Solutions | | Basic |
| 105 | ▼39 |  | Octopus Energy | Energy Solutions | | Basic |
| 106 | ▲56 |  | ENGIE UK | Energy Solutions | | Basic |
| 107 | ▲304 |  | Ampd Energy | Energy Solutions | | Basic |
| 108 | ▲57 |  | Brockwell Energy Limited | Energy Solutions | | Basic |
| 109 | ▲223 |  | Envantage | Energy Solutions | Energy Efficiency Solutions | Engage |
| 110 | ▼4 |  | Heliatek | Energy Solutions | | Basic |
| 111 | ▲308 |  | Sustainable Energy First | Energy Solutions | | Basic |
| 112 | ▲144 |  | Balanced | Advisory & Strategy | | Basic |
| 113 | ▲309 |  | BM certification | Certifications & Standards | | Basic |
| 114 | ▲223 |  | Carbonsure | Energy Solutions | | Basic |
| 115 | ▼39 |  | Assent | Measurement & Reporting | | Basic |
| 116 | ▲403 |  | char.gy | Energy Solutions | | Basic |
| 117 | ▲311 |  | EarthHub | Advisory & Strategy | | Basic |
| 118 | ▲228 |  | Eunomia Research & Consulting | Advisory & Strategy | | Basic |
| 119 | ▲71 |  | NeuerEnergy Ltd | Measurement & Reporting | | Basic |
| 120 | ▲231 |  | Neutreeno | Products & Materials | | Basic |
| 121 | ▼42 |  | Normative | Measurement & Reporting | | Basic |
| 122 | ▼106 |  | Rawstone Consulting | Advisory & Strategy | | Basic |
| 123 | ▲481 |  | Sustainable Fitch | Finance & Funding | | Basic |
| 124 | ▼71 |  | Worldly | Advisory & Strategy | | Basic |
| 125 | ▼4 |  | Volans | Advisory & Strategy | | Basic |
| 126 | ▲153 |  | Centrica Business Solutions | Energy Solutions | | Basic |
| 127 | ▼107 |  | One Tribe | Carbon Markets & Offsetting | Carbon Credit Providers | Authority |
| 128 | ▼1 |  | Arcadis | Products & Materials | | Basic |
| 129 | ▼42 |  | Carbon Tracker | Advisory & Strategy | | Basic |
| 130 | ▲320 |  | Energy Impact Partners | Finance & Funding | | Basic |
| 131 | ▲238 |  | Entocycle | Biodiversity & Nature | | Basic |
| 132 | ▼41 |  | LanzaTech | Carbon Markets & Offsetting | | Basic |
| 133 | ▲160 |  | PCAF Global | Finance & Funding | | Basic |
| 134 | ▲241 |  | The University of Western Australia | Training & Culture | | Basic |
| 135 | ▼109 |  | Time to Act | Finance & Funding | | Basic |
| 136 | ▲161 |  | Wharton Executive Education | Training & Culture | | Basic |
| 137 | ▲329 |  | Smartest Energy | Energy Solutions | | Basic |
| 138 | ▲84 |  | Aldersgate Group | Membership Organisations & Alliances | | Basic |
| 139 | ▲418 |  | Better Business Act | Membership Organisations & Alliances | | Basic |
| 140 | ▲84 |  | Biffa Waste Services Ltd | Waste & Circular Economy | | Basic |
| 141 | ▲84 |  | Brook Green Supply | Energy Solutions | | Basic |
| 142 | ▲482 |  | Circular11 | Waste & Circular Economy | | Basic |
| 143 | ▲251 |  | Impact Management Platform | Membership Organisations & Alliances | | Basic |
| 144 | ▲342 |  | Lets Pollinate | Advisory & Strategy | | Basic |
| 145 | ▲493 |  | Levidian | Carbon Markets & Offsetting | | Basic |
| 146 | ▲433 |  | PensionBee | Finance & Funding | | Basic |
| 147 | ▲346 |  | Rainforest Alliance | Membership Organisations & Alliances | | Basic |
| 148 | ▲546 |  | Science Based Targets | Certifications & Standards | | Basic |
| 149 | ▲556 |  | UN Biodiversity | Impact Organisations | | Basic |
| 150 | ▲252 |  | Verra | Carbon Markets & Offsetting | | Basic |
| 151 | ▲252 |  | We Don't Have Time | Membership Organisations & Alliances | | Basic |
| 152 | ▲176 |  | Re:wild | Impact Organisations | | Authority |
| 153 | ▲545 |  | Chronos | Advisory & Strategy | | Basic |
| 154 | ▼50 |  | Arenko | Energy Solutions | | Basic |
| 155 | ▲259 |  | Hero Future Energies | Energy Solutions | | Basic |
| 156 | ▼86 |  | Highview Power | Energy Solutions | | Basic |
| 157 | ▲15 |  | Last Energy | Energy Solutions | | Basic |
| 158 | ▼50 |  | Perfect Sense Energy | Energy Solutions | | Basic |
| 159 | ▲437 |  | Statera Energy | Energy Solutions | | Basic |
| 160 | ▼51 |  | Varco Energy | Advisory & Strategy | | Basic |
| 161 | ▼51 |  | Waterscan | Advisory & Strategy | | Basic |
| 162 | ▲259 |  | ZTP | Energy Solutions | | Basic |
| 163 | ▲434 |  | Stickerbook by Obliquity | Training & Culture | Behaviour Change & Engagement Programmes | Authority |
| 164 | ▲93 |  | Ampersand Partners | Advisory & Strategy | | Basic |
| 165 | ▲94 |  | Beyondly | Advisory & Strategy | | Basic |
| 166 | ▲94 |  | Carbon Capture | Carbon Markets & Offsetting | | Basic |
| 167 | ▲176 |  | Deepki | Measurement & Reporting | | Basic |
| 168 | ▲15 |  | Energyworx Inc. | Energy Solutions | | Basic |
| 169 | ▲95 |  | First Climate | Measurement & Reporting | | Basic |
| 170 | ▲15 |  | Future Planet | Measurement & Reporting | | Basic |
| 171 | ▲258 |  | Green Business Benchmark | Certifications & Standards | | Basic |
| 172 | ▼166 |  | Green Future Project | Measurement & Reporting | | Basic |
| 173 | ▼142 |  | Greenpixie | Measurement & Reporting | | Basic |
| 174 | ▲256 |  | Hermesnet | Measurement & Reporting | | Basic |
| 175 | ▲90 |  | Mobilityways | Mobility | | Basic |
| 176 | ▲13 |  | NET ZERO International | Advisory & Strategy | | Basic |
| 177 | ▼165 |  | Seedling | Measurement & Reporting | | Basic |
| 178 | ▲15 |  | Small99 | Training & Culture | | Basic |
| 179 | ▲260 |  | Thrust Carbon | Measurement & Reporting | | Basic |
| 180 | ▼63 |  | Verdantix | Advisory & Strategy | | Basic |
| 181 | ▼63 |  | WAP Sustainability | Advisory & Strategy | | Basic |
| 182 | ▲90 |  | Wayvie | Training & Culture | | Basic |
| 183 | ▼99 |  | WorkforClimate | Training & Culture | | Basic |
| 184 | ▼99 |  | Saïd Business School - University of Oxford | Training & Culture | | Basic |
| 185 | ▲260 |  | Deakin University | Training & Culture | | Basic |
| 186 | ▲90 |  | UrbanVolt | Energy Solutions | | Basic |
| 187 | ▲91 |  | Catalyst | Energy Solutions | | Basic |
| 188 | ▲92 |  | Clarke Controls | Energy Solutions | | Basic |
| 189 | ▼66 |  | RheEnergise | Energy Solutions | | Basic |
| 190 | ▼66 |  | Zenobe Energy | Energy Solutions | | Basic |
| 191 | ▼174 |  | Breakthrough Energy | Finance & Funding | | Basic |
| 192 | ▼171 |  | Carbon Clean | Carbon Markets & Offsetting | | Basic |
| 193 | ▲412 |  | Carbon Footprint | Carbon Markets & Offsetting | | Basic |
| 194 | ▲173 |  | CSO Futures | Training & Culture | | Basic |
| 195 | ▼158 |  | Exponential Roadmap Initiative | Membership Organisations & Alliances | | Basic |
| 196 | ▲176 |  | Grist | Impact Organisations | | Basic |
| 197 | ▲255 |  | Hitachi ZeroCarbon | Energy Solutions | | Basic |
| 198 | ▲175 |  | IP Group LC | Finance & Funding | | Basic |
| 199 | ▲339 |  | Leafr | Training & Culture | Human Resources Services | Authority |
| 200 | ▼108 |  | OnePointFive | Training & Culture | | Basic |
| 201 | ▲7 |  | SET Ventures | Finance & Funding | | Basic |
| 202 | ▲339 |  | UK Research and Innovation | Finance & Funding | | Basic |
| 203 | ▼65 |  | Utility Warehouse | Energy Solutions | | Basic |
| 204 | ▲91 |  | Walker Institute | Training & Culture | | Basic |
| 205 | ▲341 |  | eEnergy | Energy Solutions | | Basic |
| 206 | ▲256 |  | ESM Power | Energy Solutions | | Basic |
| 207 | ▲407 |  | LiveEO | Advisory & Strategy | | Basic |
| 208 | ▲256 |  | Pawprint | Training & Culture | | Basic |
| 209 | ▲345 |  | The Wildlife Trusts | Biodiversity & Nature | | Basic |
| 210 | ▲408 |  | Transformancy | Advisory & Strategy | | Basic |
| 211 | ▲453 |  | TCB Benchmarking | Advisory & Strategy | | Basic |
| 212 | ▼66 |  | Verse | Energy Solutions | | Basic |
| 213 | ▲92 |  | AlliedOffets | Carbon Markets & Offsetting | | Basic |
| 214 | ▲408 |  | BIMA | Membership Organisations & Alliances | | Basic |
| 215 | ▲257 |  | Business Declares | Membership Organisations & Alliances | | Basic |
| 216 | ▲258 |  | Carbonmark | Carbon Markets & Offsetting | | Basic |
| 217 | ▲448 |  | Chaps IT Recycling | Waste & Circular Economy | | Basic |
| 218 | ▲168 |  | Earth Law Center | Advisory & Strategy | | Basic |
| 219 | ▲259 |  | EFRAG | Certifications & Standards | | Basic |
| 220 | ▼121 |  | Final Third | Training & Culture | | Basic |
| 221 | ▼71 |  | ForestNation | Biodiversity & Nature | | Basic |
| 222 | ▲351 |  | Hanwha Q CELLS | Energy Solutions | | Basic |
| 223 | ▲412 |  | Innovation Roundtable | Membership Organisations & Alliances | | Basic |
| 224 | ▲351 |  | Nature Deal | Impact Organisations | | Basic |
| 225 | ▲467 |  | R-E-A The Association for Renewable Energy and Clean Technology | Energy Solutions | | Basic |
| 226 | ▲173 |  | RSK Wilding | Biodiversity & Nature | | Basic |
| 227 | ▲417 |  | Siemens Energy | Energy Solutions | | Basic |
| 228 | ▲354 |  | TCFD | Certifications & Standards | | Basic |
| 229 | ▲354 |  | The Advantage Travel Partnership | Mobility | | Basic |
| 230 | ▲415 |  | The Climate Group | Impact Organisations | | Basic |
| 231 | ▲465 |  | The Climate Company | Advisory & Strategy | | Basic |
| 232 | ▲271 |  | Toucan | Carbon Markets & Offsetting | | Basic |
| 233 | ▲414 |  | Trees for Life | Biodiversity & Nature | | Basic |
| 234 | ▲172 |  | World Benchmarking Alliance | Membership Organisations & Alliances | | Basic |
| 235 | ▲273 |  | Blue Marine Foundation | Impact Organisations | | Authority |
| 236 | ▲16 |  | Soil Association Certification | Certifications & Standards | Soil Health & Land Management | Basic |
| 237 | ▲93 |  | EDF Energy | Energy Solutions | | Basic |
| 238 | ▼69 |  | ESG360 | Energy Solutions | | Basic |
| 239 | ▼134 |  | Faradai | Energy Solutions | | Basic |
| 240 | ▲271 |  | MGT Teesside | Energy Solutions | | Basic |
| 241 | ▼168 |  | Schneider Electric | Energy Solutions | | Basic |
| 242 | ▼168 |  | Carbon Architecture | Advisory & Strategy | Sustainability Strategy | Authority |
| 243 | ▲272 |  | ChargePoint Inc | Energy Solutions | | Basic |
| 244 | ▼70 |  | Edenlab | Advisory & Strategy | | Basic |
| 245 | ▼168 |  | Blu Skye Consulting | Advisory & Strategy | | Basic |
| 246 | ▲405 |  | Blue Marble | Advisory & Strategy | | Basic |
| 247 | ▼199 |  | Carbmee | Measurement & Reporting | | Basic |
| 248 | ▲13 |  | Climate Trace | Measurement & Reporting | | Basic |
| 249 | ▲95 |  | Eden Smith | Training & Culture | | Basic |
| 250 | ▼243 |  | ERM | Advisory & Strategy | | Basic |