| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DURHAM WILDLIFE SERVICES LIMITED | 02599579 | 22/06/2017 | 24/04/2023 | Silver |
| DURHAM WILDLIFE TRUST | 01019263 | 21/09/2013 | 21/10/2019 | Silver |
| FERRYHILL LAKES AND DISTRICT DEVELOPMENT EDUCATION RESOURCE CENTRE LIMITED | 03953195 | 14/01/2004 | 11/10/2005 | Gold |
| INTERNATIONAL CENTRE FOR LIFE TRUST | 03225820 | 10/05/2006 | 12/11/2018 | Silver |
| OUTDOOR AND SUSTAINABILITY EDUCATION SPECIALISTS (OASES) LIMITED | 02963142 | 05/03/2007 | 28/06/2011 | Silver |
| YOUNG ENTERPRISE NORTH EAST | 04534729 | 24/01/2007 | 01/03/2011 | Dissolved |