| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NORTHERN SIGHTS | 02917572 | 28/05/1997 | Dissolved |
| NORTHUMBRIA CALVERT TRUST | 01596913 | 30/03/1996 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CNE GENERAL PARTNER LIMITED | 04232224 | 14/12/2001 | 21/06/2005 | Dissolved |
| ENDEAVOUR SCH HOLDINGS LIMITED | 03671726 | 06/06/2001 | 30/03/2011 | Silver |
| ENDEAVOUR SCH PLC | 03672185 | 06/06/2001 | 30/03/2011 | Silver |
| INSPIREDSPACES DURHAM LIMITED | 06844166 | 01/04/2010 | 31/07/2018 | Silver |
| INSPIREDSPACES STAG LIMITED | 06436101 | 26/09/2013 | 31/07/2018 | Gold |
| KENMORE UK LTD. | 01133015 | 01/01/2001 | 30/04/2005 | Amber |
| NES GENERAL PARTNER LIMITED | 03891473 | 22/12/1999 | 24/05/2004 | Dissolved |
| NEWABLE LIMITED | 01653116 | 27/05/1999 | 14/02/2000 | Silver |
| NORTH EAST CHAMBER OF COMMERCE | 02938084 | 21/04/1997 | 19/10/1998 | Amber |
| NORTHERN ENGINEERING CENTRE | 02424832 | 19/03/1992 | 11/04/1994 | Dissolved |
| NORTHERN ENTERPRISE (GENERAL PARTNER) LIMITED | 03597128 | 12/06/2000 | 21/09/2001 | Dissolved |
| NORTHERN PINETREE TRUST | 03151068 | 14/08/2008 | 18/09/2008 | Dissolved |
| Northern Informatics Applications Agency Ltd | 02988715 | 24/07/1997 | 17/09/1999 | Dissolved |
| R M 100 Ltd | 03010079 | 11/04/1995 | 13/03/1996 | Dissolved |
| Spirit of Enterprise | 05520272 | 27/07/2005 | 14/08/2008 | Dissolved |
| TANFIELD GROUP PLC | 04061965 | 19/01/2001 | 08/03/2012 | Silver |
| TEAM GENERAL PARTNER LIMITED | 02821851 | 06/07/1993 | 21/09/2001 | Dissolved |
| TEES VALLEY REGENERATION LIMITED | 04407437 | 02/04/2002 | 06/02/2004 | Dissolved |
| TEES VALLEY TOMORROW LIMITED | 02370592 | 20/01/1993 | 15/10/1998 | Amber |
| THE ALNWICK GARDEN TRUST | 04584694 | 07/11/2002 | 04/03/2010 | Silver |
| THE LAND RESTORATION TRUST | 05077263 | 06/04/2004 | 01/06/2010 | Gold |
| The Northern Media Forum Limited | 02840918 | 01/04/1994 | 22/02/1996 | Dissolved |