| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARUP GROUP LIMITED | 01312454 | 01/04/2006 | 06/06/2007 | Silver |
| BRITISH LAND COMPANY PUBLIC LIMITED COMPANY(THE) | 00621920 | 01/04/2006 | 18/07/2017 | Silver |
| DULWICH COLLEGE | 08208764 | 10/09/2012 | 31/07/2015 | Silver |
| FRONTIER ECONOMICS LIMITED | 03752719 | 01/01/2006 | 10/11/2015 | Silver |
| NATIONAL INSTITUTE OF ECONOMIC AND SOCIAL RESEARCH(INCORPORATED)(THE) | 00341010 | 17/11/2005 | 19/11/2009 | Bronze |
| PRUDENTIAL PUBLIC LIMITED COMPANY | 01397169 | 18/05/2006 | 14/05/2015 | Silver |
| THE GLOBAL WARMING POLICY FOUNDATION | 06962749 | 09/11/2009 | 31/01/2021 | Silver |
| THE ISLE OF SHEPPEY ACADEMY | 06522412 | 04/03/2008 | 31/08/2009 | Dissolved |
| ZAMBIA ORPHANS AID UK | 07863487 | 28/11/2011 | 12/12/2022 | Gold |