| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| GREEN PURPOSES COMPANY LIMITED | SC529326 | 18/08/2022 | Bronze |
| HEATHROW AIRPORT HOLDINGS LIMITED | 05757208 | 14/06/2021 | Silver |
| THE CLEAN GROWTH LEADERSHIP NETWORK LIMITED | 12409447 | 11/01/2024 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DIALOGUE EARTH | 06477262 | 25/08/2023 | 10/11/2024 | Gold |
| EN+ GROUP IPJSC | FC036850 | 20/11/2019 | 07/03/2022 | Silver |
| EST (HOLDINGS) LIMITED | 09246829 | 01/01/2018 | 30/11/2019 | Bronze |
| QUINTAIN LIMITED | 02694983 | 26/01/2004 | 31/01/2010 | Bronze |
| QUINTAIN SERVICES LIMITED | 02950066 | 09/08/2004 | 31/01/2010 | One Red Flag |
| THE CARBON CAPTURE AND STORAGE ASSOCIATION | 05650208 | 25/06/2009 | 10/12/2012 | Gold |
| THE CLIMATE CHANGE ORGANISATION | 04964424 | 26/06/2013 | 03/03/2022 | One Red Flag |
| THE JAMES HUTTON INSTITUTE | SC374831 | 18/03/2015 | 15/12/2020 | Silver |